User:PotatoBot/Lists/Dabs without ISO 639 codes
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Three letter disambiguation pages missing ISO 639-3 code, or with a wrong ISO code (Task 2). Date: 6 April 2013.
- AAB : Alumu language
- AAD : Amal language
- AAE : Arbëresh language
- AAF : Aranadan language
- AAG : Ambrak language
- AAH : Abu’ Arapesh language
- AAI : Arifama-Miniafia language
- AAK : Ankave language
- AAM : Aramanik language
- AAN : Anambé language
- AAO : Saharan Arabic
- AAP : Pará Arára language
- AAQ (disambiguation) : Abenaki language
- AAS : Asa language
- AAT : Arvanitika
- AAU : Abau language
- AAW : Solong language
- AAX : Mandobo language
- AAY : Aariya language
- AAZ : Amarasi language
- ABA aba : Abé language
- ABB (disambiguation) : Bankon language
- ABC : Ambala language
- ABD : Manide language
- abe : Abenaki language
- ABF : Abai Sungai language
- ABG : Abaga language
- ABH : Tajiki Arabic
- ABI abi : Abidji language
- ABL : Lampung language
- ABM : Abanyom language
- ABN : Abua language
- abo : Abon language
- ABP : Abellen language
- ABQ (disambiguation) : Abaza language
- ABR : Abron dialect
- ABS : Malay trade and creole languages#Ambonese Malay
- abt : Abelam language
- ABU abu : Abure language
- ABV (disambiguation) : Bahrani Arabic
- ABW : Pal language
- ABX : Abaknon language
- ABY : Aneme Wake language
- ABZ abz : Abui language
- ACA : Achawa language
- ACB : Manta language
- ACC : Achi’ language
- ACD : Kyode language
- ACF : Saint Lucian Creole French
- ACI : Aka-Cari language
- ACK : Aka-Kora language
- ACL : Akar-Bale language
- ACN : Achang language
- ACP : Eastern Acipa language
- ACQ : Ta'izzi-Adeni Arabic
- ACR : Achi’ language
- ACS : Acroá language
- ACU : Shiwiar language
- ACV : Achumawi language
- ACW : Hejazi Arabic
- ACY acy : Cypriot Maronite Arabic
- ACZ : Acheron language
- ADB : Adabe language
- ADD (disambiguation) : Dzodinka language
- ade : Adele language
- ADF : Dhofari Arabic
- ADG : Andegerebinha dialect
- ADH : Adhola dialect
- ADL : Gallong language
- ADN : Adang language
- ado : Adjora language
- ADP : Dzongkha
- ADQ : Adangme language
- ADR : Adonara language
- ADS : Adamorobe Sign Language
- ADT : Adnyamathanha language
- adu : Aduge language
- ADW : Kagwahiva language
- AEA : Gurdjar language
- AED : Argentine Sign Language
- AEE : Pashayi language
- AEK : Haeke language
- AEL : Ambele language
- AEM : Arem language
- AEN : Armenian Sign Language
- AER : Aranda language#Varieties
- AES : Alsea language
- AEU (disambiguation) : Akeu language
- AEW (disambiguation) : Ambakich language
- AEX : Spurious languages
- : Orokaiva language
- AFD : Andai language
- AFE : Putukwam language
- AFG : Afghan Sign Language
- AFI : Akrukay language
- AFK : Nanubae language
- AFN : Defaka language
- AFO : Eloyi language
- AFP : Tapei language
- AFS : Afro-Seminole Creole
- AFT : Afitti language
- AFZ : Obokuitai language
- aga : Aguano language
- AGB : Gbo language
- AGC : Agatu language
- AGD : Agarabi language
- age : Angal language
- AGF : Arguni language
- AGG : Angor language
- AGI : Agariya language
- AGK : Isarog Agta language
- AGL : Fembe language
- AGM : Angaataha language
- AGN : Agutaynen language
- AGO (disambiguation) : Tainae language
- AGP (disambiguation) : Paranan language
- AGR : Aguaruna language
- AGS : Esimbi language
- AGT : Cagayan Agta language
- AGU agu : Awakatek language
- AGV : Sinauna language
- AGW : Kahua language
- AGZ : Mount Iriga Agta language
- AHA : Ahanta language
- AHB : Axamb language
- AHG : Qimant language
- AHH : Aghu language
- ahi : Tiagba language
- AHL : Ahlon language
- AHM : Mobu language
- ahn : Ahan language
- aho : Ahom language
- AHP : Apro language
- AHS : Koro Wachi language
- AHT : Ahtna language
- AIA : Arosi language
- AIB : Äynu language
- AIC : Ainbai language
- AID : Alngith dialect
- AIE : Amara language
- AIF : Agi language
- AIG (disambiguation) : Leeward Caribbean Creole English
- : Assyrian Neo-Aramaic
- : Lishanid Noshan
- : Ake language
- ail : Aimele language
- AIM : Aimol language
- ain (disambiguation): Ainu language
- AIO : Tai Aiton language
- AIP : Burumakok language
- air (disambiguation): Airoran language
- AIS : Nataoran language
- AIT : Arikem language
- AIW : Aari language
- AIX (disambiguation) : Aigon language
- : Ali language
- AIZ : Aari language
- : Aja language (Niger–Congo)
- aji : Ajië language
- : Ngarinyin language
- AJP : Levantine Arabic
- AJT : Judeo-Tunisian Arabic
- : Judeo-Moroccan
- : Ajawa language
- : Amri language
- aka : Akan language
- AKB : Batak Angkola language
- AKC : Amberbaken language
- : Akpet language
- ake (disambiguation): Kapóng language
- : Yace language
- AKG : Anakalangu language
- : Angal language
- aki : Aiome language
- AKJ : Aka-Jeru language
- AKL akl : Aklan language
- AKM (disambiguation) : Aka-Bo language
- AKN : Spurious languages
- ako : Akurio language
- AKP : Siwu language
- : Ak language
- AKR : Araki language
- aks : Ntcham language
- : Akolet language
- aku : Akum language
- AKV : Akhvakh language
- AKW : Akwa language
- : Aka-Kede language
- : Aka-Kol language
- : Alabama language
- ala : Alago language
- ALC : Kawésqar language
- ALD : Alladian language
- ALF : Alege language
- ALH : Alawa language
- ALI ali (disambiguation): Amaimon language
- : Alangan language
- ALK : Alak language
- all : Allar language
- alm : Amblong language
- ALN : Gheg Albanian
- alo : Wakasihu language
- alp ALP (disambiguation) : Alune language
- ALR : Alyutor language
- ALS (disambiguation) : Tosk Albanian
- alt : Altai language
- ALU : 'Are'are language
- ALW : Alaba-K’abeena language
- ALX : Amol language
- ALY (disambiguation) : Aranda language
- ama : Amanayé language
- AMB : Ovambo language
- AMC : Amahuaca language
- AMD (disambiguation) : Spurious languages
- AME : Yanesha' language
- AMF : Hamer language
- AMG : Amurdag language
- : Amdang language
- AMK : Ambai language
- AML : War language
- AMM : Ama language (New Guinea)
- amn : Amanab language
- AMO : Amo language
- amp : Alamblak language
- : Amahai language
- AMS : Amami language
- AMT : Amto language
- AMU : Amuzgo language
- AMV : Ambelau language
- AMW : Western Neo-Aramaic
- AMX : Aranda language
- amy (disambiguation): Wagaydy language
- AMZ : Uradhi language
- ana : Andaqui language
- ANB : Andoa language
- ANC (disambiguation) : Ngas language
- and : Ansus language
- ane : Xaracuu language
- ANF : Animere language
- ANH : Nend language
- ani (disambiguation): Andi language
- ANJ : Anor language
- ANK : Goemai language
- ANL : Anu-Hkongso Chin language
- ANM : Namfau language
- ANN ann : Obolo language
- ANO : Andoque language
- ANQ : Jarawa language (Andaman Islands)
- ANR : Andh language
- ANS : Anserma language
- ant (disambiguation): Antakarinya language
- anu (disambiguation): Anuak language
- ANV : Denya language
- : Anaang language
- ANX : Andra-Hus language
- ANY : Anyin language
- ANZ : Anêm language
- AOA : Angolar language
- AOC : Pemon language
- AOD : Andarum language
- AOE : Angal language
- AOF : Bragat language
- AOG : Angoram language
- AOH : Cenu language
- aoi : Enindhilyagwa language
- AOJ : Mufian language
- AOK : Arhö language
- AOL (disambiguation) : Alorese language
- AOM : Ömie language
- aon : Bumbita language
- AOR : Aore language
- AOS : Taikat language
- AOT : A'Tong language
- AOU : Gelao language
- AOX : Atorada language
- : Uab Meto language
- APB : Sa'a language
- APC : Levantine Arabic
- APD : Sudanese Arabic
- ape (disambiguation): Bukiyip language
- APF : Paranan Agta language
- APG : Ampanang language
- APH : Athpare language
- API (disambiguation) : Apiaká language
- APJ : Jicarilla language
- APK : Plains Apache language
- APL : Lipan language
- APM : Mescalero-Chiricahua language
- APN : Apinayé language
- apo : West Arawe language
- APP : Apma language
- APR : Arop-Lokep language
- APS : Arop language
- APT apt : Apatani language
- APU : Apurinã language
- APV : Mamaindê language
- APW : Western Apache language
- APX (disambiguation) : Wetarese language
- apy : Apalaí language
- : Safeyoka language
- : Ampari Dogon
- : Akoko language
- AQM : Atohwaim language
- AQN : Northern Alta language
- AQP : Atakapa language
- AQR : Arhâ language
- : Akuntsu language
- ARB : Modern Standard Arabic
- ARD : Arabana language
- ARE : Aranda language#Varieties
- ARF : Arafundi languages
- ARH : Arhuaco language
- ARJ (disambiguation) : Tucano language
- ARK ark : Arikapú language
- ARL : Arabela language
- aro : Araona language
- ARQ : Algerian Arabic
- ARR : Ramarama language
- ars : Najdi Arabic
- aru : Arawá language
- ARW : Arawak language
- arx : Aruáshi language
- ASA asa : Pare language
- ASB : Assiniboine language
- ASC : Asmat language
- ASD : Asas language
- ASF : Auslan
- ASG : Shingini language
- ASH ash : Tequiraca language
- ASI : Buruwai language
- ASJ : Saari language
- ASK ask : Askunu language
- ASL (disambiguation) : Asilulu language
- ASN : Xingu Asurini language
- ASO : Dano language
- ASP asp : Algerian Sign Language
- ASQ : Austrian Sign Language
- ASR : Asuri Language
- ass : Ipulo language
- ASU : Akwáwa language
- ASV : Asoa language
- ASW : Australian Aboriginal sign languages
- ASX (disambiguation) : Muratayak language
- ASY : Asmat language
- ATA : Ata language
- ATB (disambiguation) : Zaiwa language
- ATC : Atsahuaca language
- ATD : Ata Manobo language
- ate : Atemble language
- ATF : Spurious languages
- ATG : Okpela language
- ati : Attié language
- : Atikamekw language
- ATK : Ati language
- ATL : Mount Iraya Agta language
- ATM : Ata language
- ATN (disambiguation) : Ashtiani language
- ATO : Atong language
- ATP : Atta language
- : Aralle-Tabulahan language
- ATR : Waimiri-Atroarí language
- ATS : Gros Ventre language
- ATT : Atta language
- ATU : Reel language
- ATV : Altai language
- ATX (disambiguation) : Arutani language
- : Aneityum language
- ATZ : Arta language
- AUA : Asumboa language
- AUB (disambiguation) : Phupha language
- AUC : Huaorani language
- aud : Anuta language
- aue (disambiguation): ǂKxʼauǁʼein
- aug : Aja language (Niger–Congo)
- AUH : Aushi language
- AUI : Anuki language
- AUK : Heyo language
- AUM : Asu language (Nigeria)
- : One language
- AUO : Auyokawa language
- AUP : Makayam language
- : Korur language
- AUR : Aruek language
- AUT : Austral language
- : Auye language
- : Auvergnat dialect
- auw : Awyi language
- aux : Aurá language
- : Awiyaana language
- : Uzbeki Arabic
- AVB : Avau language
- avi : Avikam language
- AVK : Codes for constructed languages#Kotava
- AVL : Bedawi Arabic
- AVM : Uradhi language
- AVN : Avatime language
- AVO : Agavotaguerra language
- AVS : Aushiri language
- AVT : Au language
- : Avokaya language
- : Avá-Canoeiro language
- AWB : Awa language (Papua New Guinea)
- AWC : Cipu language
- awe (disambiguation): Awetï language
- AWG : Anguthimri language
- AWH : Awbono language
- AWI : Awin language
- AWK (disambiguation) : Awabakal language
- AWM : Arawum language
- awn : Awngi language
- AWO awo : Awak language
- AWR : Awera language
- AWS : Shiaxa language
- AWT : Araweté language
- AWU : Aghu language
- AWV : Aghu language
- AWW : Awun language
- : Awara language
- : Shiaxa language
- : Abipón language
- axe (disambiguation): Aranda language
- : Mato Grosso Arára language
- axl : Aranda language
- : Middle Armenian
- AXX : Xârâgurè language
- AYA : Awar language
- : Ayizo language
- AYC : Southern Aymara language
- AYD : Ayabadhu language
- : Ayere language
- : Ginyanga language
- AYH : Hadhrami Arabic
- AYI ayi : Yigha language
- ayk : Akuku language
- : Libyan Arabic
- : Aymara language
- ayn : Yemeni Arabic
- AYO : Ayoreo language
- AYP : North Mesopotamian Arabic
- : Ayi language (Papua New Guinea)
- ayr (disambiguation): Central Aymara
- AYS : Sorsogon Ayta language
- : Mariveleño language
- ayu (disambiguation): Ayu language
- : Tayabas Ayta language
- : Ayamaru language
- aza : Azha language
- : Mexicanero language
- : Azerbaijani language
- AZM : Amuzgo language
- AZN : Mexicanero language
- azo : Awing language
- : Adzera language
- AZT (disambiguation) : Atta language
- : Sierra Puebla Nahuatl
- BAA : Babatana language
- BAB bab : Banyum language
- BAC : Sundanese language
- BAE (disambiguation) : Baré language
- BAF : Baca language
- bag (disambiguation): Ki language
- BAH : Bahamian Creole
- baj : Barakai language
- BAO bao (disambiguation): Waimajã language
- BAP : Bantawa language
- BAS bas : Basaa language
- bau : Jarawa language (Nigeria)
- : Vengo language
- BAW (disambiguation) : Mbili-Mbui language
- bay (disambiguation): Batuley language
- BAZ baz : Nen language
- BBA (disambiguation) : Bariba language
- BBB : Barai language
- BBC (disambiguation) : Toba Batak language
- BBD : Bau language (New Guinea)
- BBE : Bangba language
- BBF : Baibai language
- BBG : Barama language
- BBH : Bugan language
- BBI : Rombi language
- : Ghomala' language
- BBK : Babanki language
- BBL (disambiguation) : Bats language
- BBM : Bango language
- BBN : Uneapa language
- BBO : Bobo language
- BBP : West Banda language
- : Bamali language
- BBR : Girawa language
- BBS : Bakpinka language
- BBT : Mburku language
- BBU : Kulung language (Nigeria)
- : Karnai language
- BBW : Papia language
- BBX : Wovea language
- BBY : Menchum language
- : Babalia Creole Arabic
- BCA : Bai language
- BCB : Banyum language
- BCC : Balochi language
- BCD : North Babar language
- BCE (disambiguation) : Menyam language
- BCG : Baga language
- BCH : Bariai language
- BCI : Baoulé language
- BCJ : Bardi language
- BCK : Bunuba language
- BCM : Bannoni language
- BCN : Bali language (Adamawa)
- BCO : Kaluli language
- BCP : Baali language
- BCQ : Bench language
- BCR : Babine-Witsuwit'en language
- BCS : Humono language
- BCT : Bendi language (Sudanic)
- BCU : Awad Bing language
- BCV : Shoo-Minda-Nye language
- : Bana language
- : Pamona language
- : Bacama language
- BCZ : Banyum language
- BDA : Bayot language
- BDB : Basap language
- BDC : Baudo language
- BDD : Bunama language
- : Bade language
- BDF : Mountain Koiali language
- : Bonggi language
- BDH : Baka language (South Sudan)
- BDI : Burun language
- : Bai language
- BDK : Budukh language
- : Bajaw language
- BDM : Yedina language
- : Baldemu language
- BDP : Tongwe language
- BDQ : Bahnar language
- BDR : Bajaw language
- BDS : Burunge language
- BDT : Bokoto language
- BDU : Oroko language
- BDW : Baham language
- BDX : Budong-Budong language
- : Bandjalang language
- : Badeshi language
- bea : Danezaa language
- : Bebele language
- BEC bec : Ceve language
- bed (disambiguation): Bedoanas language
- bee (disambiguation): Byangsi language
- BEF : Benabena language
- BEG beg : Belait language
- BEH beh : Berba language
- BEI : Bakati’ language
- : Beja language
- BEK bek : Bebeli language
- BEM : Bemba language
- BEO : Beami language
- BEP : Badaic language
- BEQ : Bembe language (Kibembe)
- BES : Besme language
- BET bet : Bété language
- BEU : Blagar language
- bev : Bété language
- BEW : Betawi language
- : Jur Modo language
- bey (disambiguation): Beli language
- bez : Bena language
- BFA : Bari language
- BFB : Pauri Bareli language
- BFC : Bai language
- BFD : Fut language
- BFE : Betaf language
- BFF : Bofi language
- BFG : Kayan language (Borneo)
- BFH : Blafe language
- BFI : British Sign Language
- : Fanji language
- : Ban Khor Sign Language
- BFL : Central Banda language
- BFM : Mmen language
- BFN : Bunak language
- BFO : Birifor language
- BFP : Beba language
- BFS : Bai language
- BFT : Balti language
- BFU : Gahri language
- : Bonda language
- BFX : Bantayanon language
- BFZ : Mahasu Pahari language
- BGA : Lyase language
- : Bobongko language
- BGC : Haryanvi language
- BGD : Rathwi Bareli language
- BGE : Bauria language
- BGF : Bangandu language
- BGG : Khowa language
- BGH : Bugan language
- BGI : Bagobo language
- : Bangolan language
- BGK : Bit language
- BGL : Maleng language
- BGM : Baga Mboteni language
- BGN : Balochi language
- BGO : Baga language
- : Balochi language
- : Bagri language
- BGR : Bawm language
- BGS : Tagabawa language
- BGT : Bughotu language
- : Kamkam language
- : Bipim language
- BGW : Oriya language
- : Balkan Gagauz Turkish
- : Benggoi language
- BHA : Bharia language
- : Bhili language
- BHC : Ma'ya language
- BHD : Bhadrawahi language
- BHF (disambiguation) : Busa language (Papuan)
- BHG : Binandere language
- : Bukhori dialect
- BHI : Bhilali language
- : Bahing language
- BHK : Albay Bikol language
- BHL : Bimin language
- BHM : Bathari language
- BHN : Bohtan Neo-Aramaic
- bhp : Bima language
- BHR : Bara Malagasy
- BHS : Buwal language
- BHT : Bhattiyali language
- BHU : Halbi language
- BHV : Bahau language
- : Biak language
- : Bhele language
- : Badaic language
- BIA : Badimaya language
- bib : Bissa language
- BIC : Bikaru language
- BID : Bidiyo language
- bie : Bepour language
- BIF : Biafada language
- big : Kunimaipa language
- BII : Bisu language
- : Kwanka language
- BIL : Bile language
- bim (disambiguation): Moba language
- bio : Nai language
- BIP : Bila language
- : Bipi language
- BIR : Nete language
- bit (disambiguation): Berinomo language
- BIU : Biete language
- BIV : Birifor language
- BIW : Kol language (Cameroon)
- bix (disambiguation): Birjia language
- biz : Ngiri language
- BJA : Budza language
- : Barngarla language
- BJC : Aga Bereho language
- BJD : Darling language
- : Biao Min language
- : Barzani Jewish Neo-Aramaic
- : Bahinemo language
- : Burji language
- : Kannauji
- BJK (disambiguation) : Barok language
- : Bulu language (Oceanic)
- BJM (disambiguation) : Bajelani language
- : Central Banda language
- BJP (disambiguation) : Tangga language
- : Malagasy language
- BJR : Binumarien language
- BJS : Bajan Creole
- : Balanta language
- BJU : Busuu language
- : Doba language
- BJW : Bakwé language
- : Kalinga language
- : Bayali language
- : Baruga language
- BKA : Bambuka language
- BKB : Bontoc language
- BKC : Baka language
- : Binukid language
- BKE : Bengkulu language
- BKF : Beeke language
- : Gbanzili language
- : Kogo language
- : Baki language
- : Pande language
- BKK (disambiguation) : Brokskat language
- BKL : Berik language
- BKM : Kom language
- : Bukitan language
- BKO (disambiguation) : Kwa’ language
- BKP (disambiguation) : Bala language
- BKQ : Bakairi language
- bkr : Bakumpai language
- : Sorsoganon language
- BKT : Loki dialect
- : Buhid language
- : Bekwarra language
- BKW : Bekwil language
- BKX : Uab Meto language
- : Boki language
- : Bungku language
- BLB : Bilua language
- BLC blc : Nuxálk language
- BLD : Bolango language
- BLE ble : Balanta language
- BLF : Buol language
- BLG : Balau language
- BLH : Kuwaa language
- BLI : Ntomba-Bolia language
- : Segai language
- BLK : Pa'O language
- BLL : Biloxi language
- BLM : Beli language (South Sudan)
- : Southern Catanduanes Bikol language
- BLO : Anii language
- BLP : Blablanga language
- : Baluan-Pam language
- BLR : Blang language
- BLS : Balaesang language
- BLT (disambiguation) : Tai Dam language
- blu : Hmong language
- BLV : Bolo language
- : Balangao language
- BLX : Mag-indi language
- bly : Notre language
- BLZ : Balantak language
- BMA : Lame language
- BMB : Bembe language (Ibembe)
- BMC : Biem language
- BMD : Baga language
- BME : Baka language
- BMF : Bom language
- BMG (disambiguation) : Bamwe language
- BMH : Kein language
- BMI : Bagirmi language
- BMK : Ghayavi language
- BML : Bomboli language
- BMM : Malagasy language
- : Bina language (Papua New Guinea)
- BMO : Bambalang language
- BMP : Bulgebi language
- BMQ : Bwa languages
- BMR : Muinane language
- BMS : Kanuri language
- BMT : Iu Mien language
- BMU : Burum language
- BMV : Bum language
- BMW (disambiguation) : Bomwali language
- BMX (disambiguation) : Baimak language
- : Buyu language
- : Baramu language
- BNA : Bonerate language
- : Bookan language
- BNC : Bontoc language
- BND : Banda language (Maluku)
- BNE (disambiguation) : Bintauna language
- BNF : Masiwang language
- BNG : Benga language
- : Jamamadí language
- BNI : Bangi language
- BNJ : Tawbuid language
- BNK : Bierebo language
- BNL : Boon language
- : Noho language
- BNN : Bunun language
- BNO : Asi language
- BNP : Bola language (Austronesian)
- : Bantik language
- BNR : Butmas language
- BNS : Bundeli language
- BNU : Bentong language
- BNV : Bonerif language
- BNW : Bisis language
- BNX : Bangubangu language
- : Bintulu language
- : Beezen language
- boa : Bora language
- bob : Aweer language
- BOC : Mainstream Kenyah language
- BOD : Standard Tibetan
- boe : Mundabli language
- : Bolon language
- bog (disambiguation): Bamako Sign Language
- BOH : Boma language
- boi BOI (disambiguation) : Barbareño language
- : Anjam language
- bok : Bonjo language
- bol : Bole language
- bon (disambiguation): Bine language
- boo : Bozo language
- bop : Bonkiman language
- BOQ : Pogaya language
- BOR bor : Bororo language
- bot : Bongo language
- bou (disambiguation): Bondei language
- bov : Bowili language
- bow : Rema language
- box (disambiguation): Bwa languages
- boy (disambiguation): Bodo language (Bantu)
- boz : Bozo language
- BPA : Daakaka language
- BPB : Pasto language
- BPD : Central Banda language
- BPG : Bonggo language
- BPH : Botlikh language
- BPI : Bagupi language
- : Binji language
- : Orowe language
- BPL : Broome Pearling Lugger Pidgin
- BPM : Biyom language
- BPN : Dzao Min language
- BPO : Anasi language
- BPP : Kaure language
- : Malay trade and creole languages#Bandanese Malay
- BPR : Blaan language
- BPS : Blaan language
- BPT : Barrow Point language
- BPU : Bongu language
- BPV : Marind language
- : Bo language (New Guinea)
- : Bilba language
- : Akan language
- : Bagusa language
- : Boko language
- : Lapurdian dialect
- : Baga language
- : Bago-Kusuntu language
- : Baima language
- : Bakhtiari dialect
- : Bandial language
- : Central Banda language
- : Bilakura language
- : Kpwe language
- : Bulgarian Sign Language
- : Balo language
- : Busa language (Mande)
- : Biritai language
- : Burusu language
- : Bosmun language
- : Guru language
- : Koro Wachi language
- : Buru language (Nigeria)
- : Baangi language
- : Kata Kolok
- : Manenguba language
- BRA bra : Braj Bhasha
- BRB : Brao language
- BRC : Berbice Creole Dutch
- BRD : Baram language
- BRF : Bira language
- BRG : Baure language
- BRI : Kpwe language
- BRJ : Bieria language
- BRK (disambiguation) : Birgid language
- BRL (disambiguation) : Northern Sotho language#Other varieties of Northern Sotho
- BRM (disambiguation) : Barambu language
- BRN : Boruca language
- bro : Brokkat language
- BRP : Baropasi language
- : Breri language
- BRR : Birao language
- BRS : Kaili language
- BRT : Bitare language
- : Bru language
- BRW : Bellari language
- : Bodo language
- BRY bry : Burui language
- BSA : Abinomn language
- BSB : Brunei Bisaya language
- BSC : Bassari language
- BSD (disambiguation) : Brunei Bisaya language
- BSE : Wushi language
- BSF : Bauchi language
- BSG : Bashkardi language
- BSH : Kata-vari dialect
- BSI : Manenguba language
- BSJ : Bangwinji language
- BSK : Burushaski
- BSL : Basa-Gumna language
- BSM : Busami language
- BSN : Barasana-Eduria language
- BSP : Baga language
- : Bassa language
- BSR : Basa-Kontagora language
- BSS : Manenguba language
- BST : Basketo language
- BSU : Bahonsuai language
- BSV : Baga language
- BSW (disambiguation) : Baiso language
- BSX : Yankam language
- BSY : Sabah Bisaya language
- : Souletin dialect
- BTA : Bata language
- BTB : Beti language
- BTC : Bati language (Cameroon)
- BTD (disambiguation) : Batak Dairi language
- : Gamo-Ningi language
- BTF : Birgit language
- : Bété language
- BTH (disambiguation) : Biatah language
- BTI : Burate language
- : Malay trade and creole languages#Bacanese Malay
- BTL : List of unclassified languages according to the Ethnologue#Asia
- BTM : Mandailing language
- BTN : Ratagnon language
- BTO : Rinconada Bikol language
- BTP : Budibud language
- BTQ (disambiguation) : Batek language
- BTR : Baetora language
- BTS : Batak Simalungun language
- BTT : Bendi language
- BTU (disambiguation) : Batu language
- BTV : Bateri language
- BTX : Batak Karo language
- : Bobot language
- BTZ : Alas language
- bua : Buryat language
- bud (disambiguation): Ntcham language
- BUE : Beothuk language
- BUF : Bushong language
- BUH : Younuo language
- bui : Bongili language
- : Koromba language
- bum : Bulu language
- bun (disambiguation): Sherbro language
- BUO : Terei language
- : Busoa language
- : Brem language
- bus (disambiguation): Busa language (Mande)
- BUT : Bungain language
- BUV : Bun language
- BUW : Bube language
- bux : Boghom language
- buy : Bullom So language
- buz : Naki language
- BVA : Barein language
- BVB : Bube language
- BVC : Baelelea language
- : Baeggu language
- BVE : Berau Malay language
- : Boor language
- BVG (disambiguation) : Bonkeng language
- BVH : Bure language
- BVI : Belanda Viri language
- : Baan language
- BVK : Bukat language
- BVL : Bolivian Sign Language
- BVM : Munka language
- : Buna language
- BVO : Bolgo language
- BVP : Bumang language
- : Birri language
- BVR (disambiguation) : Burarra language
- BVS : Belgian Sign Language
- BVT : Bati language (Indonesia)
- BVU : Banjar language
- : Baniwa of Guainia
- : Bole language (Bantu)
- : Baybay language
- : Bauzi language
- BWA : Haveke language
- BWB : Namosi-Naitasiri-Serua language
- BWC : Bwile language
- BWD (disambiguation) : Bwaidoka language
- : Bwe Karen language
- BWF : Boselewa language
- : Sena language
- bwh : Bishuo language
- BWJ : Bwa languages
- BWK : Bauwaki language
- BWL : Bwela language
- : Biwat language
- : Hm Nai language
- BWO : Shinasha language
- BWP : Mandobo language
- : Bobo language
- : Bura language
- BWS (disambiguation) : Bomboma language
- : Bafaw-Balong language
- BWU : Buli language (Ghana)
- BWV (disambiguation) : Mainstream Kenyah language
- : Bwa language
- : Bu-Nao language
- : Bwa languages
- : Bwisi language
- : Bauro language
- : Belanda Bor language
- : Lengue language
- bxd : Pela language
- : Ongota language
- : Bilur language
- : Bangala language
- : Buhutu language
- : Diyari language
- BXJ : Burduna language
- : Bukusu dialect
- BXL : Jeri language
- BXM : Buryat language
- : Barikanchi Pidgin
- : Bebil language
- : Ɓeele language
- : Buryat language
- : Busam language
- : Bit language
- : Buryat language
- : Beraku language
- BXW : Banka language
- : Binahari language
- BYA : Palawan Batak language
- : Bikya language
- BYC : Ubaghara language
- BYD : Nyadu’ language
- bye : Pouye language
- BYF : Bete language (Nigeria)
- BYG : Beigo language
- BYI : Buyu language
- byk : Biao language
- BYL : Bayono language
- BYM : Bidjara language
- : Piyo language
- : Bumaji language
- : Yipma language
- BYS : Burak language
- byt : Berti language
- : Medumba language
- : Belhare language
- : Qaqet language
- : Banaro language
- BZA : Bandi language
- : Andio language
- : Malagasy language
- BZD : Bribri language
- BZE : Bozo language
- : Babuza language
- BZH : Mapos Buang language
- : Bisu language
- : Belizean Creole
- : Miskito Coast Creole
- : Boano language (Sulawesi)
- : Londo language
- : Boano language (Maluku)
- BZO : Bozaba language
- BZP : Arandai language
- : Buli language (Indonesia)
- bzr : Biri language
- : Brazilian Sign Language
- : Brithenig
- BZU : Burmeso language
- : Bebe language
- : Basa-Benue language
- : Bozo language
- : Banliku language
- : Evant language
- CAA : Ch’orti’ language
- cab : Garifuna language
- CAC : Chuj language
- CAE : Laalaa language
- CAF : Carrier language
- CAG : Nivaclé language
- CAH : Cahuarano language
- CAJ : Chané language
- CAK (disambiguation) : Kaqchikel language
- cam (disambiguation): Cèmuhî language
- CAN can : Chambri language
- cao : Chácobo language
- CAP cap (disambiguation): Chipaya language
- CAQ : Car language
- car (disambiguation): Carib language
- CAS cas : Chimane language
- cat (disambiguation): Catalan language
- CAV : Cavineña language
- CAX : Chiquitano language
- CAY : Cayuga language
- caz : Canichana language
- CBB : Cabiyari language
- CBC : Carapana language
- CBD : Carijona language
- CBE (disambiguation) : Chipiajes language
- CBG : Chimila language
- CBH : Cagua language
- CBI : Cayapa language
- CBJ : Ede language
- CBL : Shö language
- CBM : Kaqchikel language
- CBN : Nyah Kur language
- CBO : Zora language
- CBR : Cashibo language
- CBS (disambiguation) : Cashinahua language
- CBT : Chayahuita language
- CBU : Candoshi-Shapra language
- CBV : Kakwa language
- : Carabayo language
- CCA cca : Cauca language
- CCC : Chamicuro language
- CCD : Cafundó language
- CCE : Chopi language
- CCG : Daka language
- CCH : Atsam language
- CCJ : Kasanga language
- CCL : Cutchi-Swahili
- CCM : Malay trade and creole languages#Malaccan Creole Malay
- CCP : Chakma language
- : Arakanese language
- CCR : Cacaopera language
- CCX : Northern Tai languages
- : Zhuang languages
- CDA : Choni language
- CDE : Chenchu language
- CDF : Chiru language
- CDG : Chamari language
- CDH : Mandeali language
- CDI : Chodri language
- : Mandeali language
- CDM : Chepang language
- CDN : Chaudangsi language
- CDR : Kamuku language
- CDS : Nigerian Sign Language
- CDZ : Koda language
- cea : Lower Chehalis language
- CEG : Chamacoco language
- CEK : Khumi language
- CEN : Izere language
- CET : Jalaa language
- CFA : Dijim-Bwilim language
- CFD : Cara language
- CFG : Como Karim language
- CFM : Falam language
- CGA : Changriwa language
- CGC : Kagayanen language
- CGG : Kiga language
- : Chocangaca language
- CHB : Chibcha language
- CHC : Catawba language
- CHD : Highland Oaxaca Chontal
- CHF (disambiguation) : Chontal Maya language
- : Chagatai language
- CHH : Lower Chinook
- : Chinantec of Ojitlán
- CHL : Cahuilla language
- CHN : Chinook Jargon
- CHP : Chipewyan language
- : Highland Chinantec language
- CHS : Chumashan languages
- CHT : Cholón language
- CHW : Chuwabu language
- CHX : Chantyal language
- CHZ : Chinantec of Ozumacín
- CIA (disambiguation) : Cia-Cia language
- CIB : Fon language
- CIC : Chickasaw language
- CID cid : Chimariko language
- CIE : Cineni language
- CIK : Kinnauri language
- CIM : Cimbrian language
- cin : Cinta Larga language
- CIP : Chiapanec language
- CIR : Tîrî language
- CIT : Chittagonian language
- : Cumanagota language
- CJA : Cham language
- : Chru language
- : Upper Chehalis language
- : Chamalal language
- : Chokwe language
- : Cham language
- : Chenapian language
- : Pajonal Ashéninka
- CJP : Cabécar language
- : Chorotega language
- CJS : Shor language
- : Chuave language
- : Jin Chinese
- CKA : Mro language
- CKC : Kaqchikel language
- CKD : Kaqchikel language
- : Kaqchikel language
- : Kaqchikel language
- : Sak language
- CKI : Kaqchikel language
- : Kaqchikel language
- CKK : Kaqchikel language
- : Cibak language
- : Chakosi language
- : Kairak language
- CKS : Tayo language
- : Koasati language
- : Kavalan language
- : Kaqchikel language
- CKX : Caka language
- CKY : Cakfem-Mushere language
- : Cauque Mayan language
- CLA : Ron language
- CLC : Chilcotin language
- CLD : Chaldean Neo-Aramaic
- CLE : Lealao Chinantec
- CLH : Chilisso language
- CLI : Chakali language
- CLK : Idu Mishmi language
- CLL : Chala language
- CLM : Klallam language
- CLO : Huamelula language
- CLU : Caluyanon language
- : Highland Chatino
- CMA : Koho language
- CME : Cerma language
- CMG : Classical Mongolian language
- CMI : Chami language
- : Chemakum language
- CML : Campalagian language
- CMM : Mitchigamea
- CMO : Mnong language
- CMR : Mro language
- CMS : Messapian language
- CMT : Tsotsitaal
- CNB : Shö language
- CNC (disambiguation) : Côông language
- CNG (disambiguation) : Northern Qiang language
- CNH : Hakha Chin language
- CNI : Asháninka language
- : Khumi language
- CNL : Lalana-Tepinapa Chinantec
- CNO : Con language
- CNS : Asmat language
- CNT : Chinantec of Tepetotutla
- CNU : Shenwa language
- CNW (disambiguation) : Ngawn language
- : Cornish language
- COA coa : Cocos Malay
- cob : Chicomuceltec language
- COC : Cocopah language
- cod (disambiguation): Cocama language
- COE : Koreguaje language
- COF : Tsáchila language
- cog : Chong language
- : Mijikenda language
- COJ : Cochimí language
- COK : Cora language
- com : Comanche language
- con : Cofán language
- COO : Comox language
- : Tututni language
- COR cor : Cornish language
- cos : Corsican language
- COT : Caquinte language
- COU cou : Wamey language
- : Kam language
- cow (disambiguation): Cowlitz language
- cox : Machiguenga language
- coy : Coyaima language
- COZ coz : Chocho language
- CPA : Chinantec of Palantla
- CPB : Ucayali–Yurúa Ashéninka
- CPC : Axininca language
- CPG : Cappadocian Greek language
- CPI (disambiguation) : Chinese Pidgin English
- CPN : Cherepon language
- CPO : Kpee language
- CPS : Capiznon language
- CPU (disambiguation) : Pichis Ashéninka
- CPX : Pu-Xian Min
- : South Ucayali Ashéninka
- : Hmong language
- : South Bolivian Quechua
- CRA : Chara language
- CRB : Island Carib language
- CRC : Lonwolwol language
- CRD : Coeur d'Alene language
- CRE cre : Cree language
- CRF : Caramanta language
- CRI : Forro language
- CRJ : East Cree
- CRK : Plains Cree
- CRL : East Cree
- CRM : Moose Cree language
- CRN : Cora language
- CRO : Crow language
- CRQ : Iyo'wujwa Chorote language
- CRT : Iyojwa'ja Chorote language
- cru : Baniwa language
- CRV : Chaura language
- CRW : Chrau language
- CRX : Carrier language
- CRY cry (disambiguation): Cori language
- CRZ : Cruzeño language
- CSA : Chinantec-Tlacoatzintepec Chinantec
- CSC : Catalan Sign Language
- CSD : Chiangmai Sign Language
- CSE : Czech Sign Language
- CSF : Cuban Sign Language
- CSG : Chilean Sign Language
- CSH : Shö language
- CSI : Coast Miwok language
- CSK : Kasa language
- CSM : Central Sierra Miwok
- CSN : Colombian Sign Language
- CSO : Sochiapam Chinantec
- : Yugoslav Sign Language
- CSR : Costa Rican Sign Language
- CSS (disambiguation) : Ohlone languages
- CST : Ohlone languages
- CSW : Swampy Cree language
- CSY : Siyin language
- CSZ : Hanis language
- CTA : Tataltepec Chatino
- CTC : Tolowa language
- CTD : Sukte language
- CTE : Lalana-Tepinapa Chinantec
- CTG : Chittagonian language
- CTI : Ch’ol language
- CTL : Chinantec-Tlacoatzintepec Chinantec
- CTM : Chitimacha language
- CTN : Chintang language
- CTO : Catio language
- CTP : Highland Chatino
- CTS : Pandan Bikol language
- CTU : Ch’ol language
- CTZ : Zacatepec Chatino
- CUA : Cua language (Austroasiatic)
- CUB cub : Cubeo language
- CUC : Usila Chinantec
- CUG : Cung language
- CUH : Meru language
- cui CUI (disambiguation) : Cuiba language
- : Mashco Piro language
- CUK : Kuna language
- cul : Culina language
- cun : K’iche’ language
- CUO : Cumanagota language
- CUP cup : Cupeño language
- cuq : Cun language
- CUR : Chulung language
- cut : Cuicatec language
- CUU : Tai Ya language
- CUV : Cuvok language
- CUW : Kulung language
- : Cuicatec language
- CVG : Lish language
- CVN : Chinantec of Palantla
- CWA : Kabwa language
- CWB : Chuwabu language
- CWE : Kwere language
- CWG : Cheq Wong language
- CWT : Kwatay language
- CYA : Highland Chatino
- : Cayuvava language
- : Cuyonon language
- : Huizhou Chinese
- CZK (disambiguation) : Knaanic language
- : Zenzontepec Chatino
- CZT : Zotung language
- DAA : Dangaléat language
- DAC : Mumeng language
- DAD dad (disambiguation): Marik language
- DAE dae : Dii languages
- DAF : Dan language
- dai : Day language
- : Nyala language (Sudan)
- DAK (disambiguation) : Dakota language
- dal (disambiguation): Dahalo language
- dam (disambiguation): Damakawa language
- dan : Danish language
- DAO : Daai language
- DAP : Nishi language
- DAQ : Maria language (India)
- dar : Dargwa language
- das : Daho-Doo language
- DAT : Digaro Mishmi language
- dau : Sila language (Chad)
- DAV : Taita language
- daw : Davawenyo language
- dax : Dhuwal language
- daz : Dao language
- DBA : Bangime language
- DBB : Deno language
- DBD : Dadiya language
- DBE (disambiguation) : Dabe language
- DBF : Iau language
- : Dogul Dogon
- DBI : Doka language
- : Ida'an language
- DBM : Jarawa language (Nigeria)
- DBN (disambiguation) : Duriankere language
- : Dulbu language
- DBP : Ɗuwai language
- DBQ : Daba language
- DBR : Dabarre language
- DBT : Ben Tey Dogon
- DBU : Bondum Dogon
- DBV : Dungu language
- : Bankan Tey Dogon
- DBY : Dibiyaso language
- DCC : Dakhini
- DCR : Negerhollands
- DDA : Yitha Yitha language
- DDD : Lotuko language
- DDE : Bembe language (Kibembe)
- DDG : Fataluku language
- DDI : Diodio language
- : Djaru language
- DDN : Dendi language
- DDR : Dhudhuroa language
- DDS : Escarpment Dogon
- dec : Dengebu language
- DED : Dedua language
- dee : Dewoin language
- def : Dezfuli dialect
- DEG : Degema language
- deh : Persian language#Varieties and dialects
- DEI : Demisa language
- DEK dek : Dek language
- del (disambiguation): Delaware languages
- DEM (disambiguation) : Dem language
- DEN den : Slavey language
- DEP : Delaware languages#Derived languages
- DEQ : Ngbandi language
- der : Deori language
- DES : Desano language
- DEU : German language
- dev : Domung language
- DGA : Dagaare language
- : Budu Dogon
- DGC : Dumagat Agta language
- DGD : Dagaare language
- DGE : Degenan language
- DGH (disambiguation) : Dghwede language
- DGI : Dagaare language
- DGK : Dagba language
- DGL : Dongolawi language
- : Wardaman language
- : Dogri language
- DGR : Dogrib language
- DGS : Dogoso language
- : Ndra'ngith language
- : Daungwurrung language
- : Baruga language
- : Daga language
- DHA : Spurious languages
- DHD (disambiguation) : Dhundari language
- : Dhangu language
- DHL (disambiguation) : Dhalandji language
- DHM : Zemba language
- : Dhanki language
- : Dhodia language
- DHR : Mantharta language
- DHS (disambiguation) : Kamba language
- DHU : Dhurga language
- : Drehu language
- dia : Dia language
- DIB : Dinka language
- DIC (disambiguation) : Dida language
- DID : Didinga language
- DIF : Diyari language
- dig : Digo language
- DIH : Kumeyaay language
- DII : Kaalong language
- : Dai language (Austronesian)
- : Dinka language
- DIL : Hill Nubian languages
- dim : Dime language
- din : Dinka language
- dio : Dibo language
- DIP : Dinka language
- dir : Daka language
- dis : Dimasa language
- DIT : Diyari language
- diu : Gciriku language
- div : Maldivian language
- DIW : Dinka language
- dix : Dixon Reef language
- DIY (disambiguation) : Diuwe language
- : Ding language
- DJA : Djadjawurrung language
- DJB : Djinba language
- DJC : Daju Mongo language
- : Zarma language
- : Guugu Yalandji language
- : Djinang language
- : Djeebbana language
- DJK : Ndyuka language
- : Jamsai Dogon
- : Jawoyn language
- DJO : Jangkang language
- : Dhuwal language
- : Kapriman language
- : Dakpa language
- DKK : Dakka language
- : Mombo Dogon
- DKR : Kuijau language
- : Dinka language
- DLG : Dolgan language
- DLK : Dahalik language
- DLM : Dalmatian language
- : Darlong language
- DMA : Duma language
- DMB : Mombo Dogon
- DMC : Dimir language
- DMD : Madhi Madhi language
- DME : Ɗugwor language
- DMG : Kinabatangan language
- DMK : Domaaki language
- DML : Dameli language
- DMM : Dama language
- DMO : Kemezung language
- DMR : East Damar language
- DMS : Dampelas language
- DMU : Tebi language
- DMW : Mudbura language
- DMX : Dema language
- : Demta language
- DNA (disambiguation) : Grand Valley Dani language
- DND : Daonda language
- DNE : Ndendeule language
- DNG : Dungan language
- DNI : Grand Valley Dani language
- : Dan language
- DNK : Dengka language
- DNN : Duun language
- DNR : Danaru language
- DNT : Grand Valley Dani language
- : Danau language
- : Danu language
- : Deni language
- DOA : Dom language
- dob : Dobu language
- DOF : Domu language
- doh : Kam language
- : Dondo language (Austronesian)
- DOL dol : Doso language
- don : Toura language (Papua New Guinea)
- doo : Dongo language
- DOP : Lukpa language
- DOQ : Dominican Sign Language
- dor : Dori'o language
- DOS (disambiguation) : Doghose language
- dot : Dass language
- DOV : Tonga language (Zambia)
- dow : Dowayo language
- doy : Dompo language
- : Dorze language
- DPP : Papar language
- DRB : Hill Nubian languages
- DRC : Minderico language
- DRD : Darmiya language
- DRE : Central Tibetan language
- DRG : Momogun language
- DRH : Darkhad dialect
- DRI : Lela language
- DRL : Darling language
- DRN : West Damar language
- DRO dro : Daro-Matu language
- DRQ : Dura language
- DRR : Kazukuru language
- DRS : Gedeo language
- DRT : Drèents dialects
- : Rukai language
- DRW : Persian language
- DSE : Dutch Sign Language
- DSH : Daasanach language
- DSI : Disa language
- DSN : Dusner language
- DSO : Oriya language
- DTA : Daur language
- DTB : Eastern Kadazan language
- DTD : Ditidaht language
- DTH : Adithinngithigh language
- DTI : Ana Dogon
- DTK : Western Plains Dogon
- DTM : Western Plains Dogon
- DTO : Escarpment Dogon
- DTP : Dusun language
- DTR : Lotud language
- DTS : Escarpment Dogon
- DTT : Toro-tegu Dogon
- DTU : Tebul Dogon
- : Nepali language
- dua (disambiguation): Duala language
- dub : Dubli language
- DUC : Duna language
- : Duka language
- due : Umiray Dumaget language
- DUF : Ndrumbea language
- dug : Mijikenda language
- DUI (disambiguation) : Dumun language
- : Dhuwal language
- DUK duk : Uyajitaya language
- DUL dul : Alabat Island Agta language
- dun (disambiguation): Deyah language
- DUO duo : Dupaningan Agta language
- DUP dup : Duano’ language
- : Dusun Malang language
- DUR : Dii languages
- DUS : Dumi language
- : Derung language
- DUV : Duvle language
- : Dusun Witu language
- dux (disambiguation): Duun language
- : Dicamay Agta language
- : Duli language
- DVA : Duau language
- DWA : Diri language
- : Bankan Tey Dogon
- DWR : Gamo-Gofa-Dawro language
- DWW : Dawawa language
- DYA : Dyan language
- : Djabirr-Djabirr language
- : Djugun language
- : Atta language
- : Djimini language
- DYK : Land Dayak languages
- : Yanda Dogon
- dyn : Dyangadi language
- dyo (disambiguation): Jola-Fonyi language
- DYU : Dyula language
- : Djabugay language
- : Tunzu language
- : Dazawa language
- : Jiwarli dialect
- : Dazaga language
- : Dzala language
- : Dzando language
- : Dzongkha
- EAA : Wangkumara language
- EBG : Ebughu language
- EBK : Bontoc language
- EBR : Ebrié language
- EBU (disambiguation) : Embu language
- ECR : Eteocretan language
- ECS : Ecuadorian Sign Language
- : Eteocypriot language
- EEE : E language
- EFA : Efai language
- EFI : Efik language
- EGL : Emilian language
- ego : Eggon language
- : Egyptian language
- EHU : Ehueun language
- EIP : Eipo language
- EIT : Eitiep language
- EIV : Askopan language
- EJA : Jola-Felupe language
- eka : Ekajuk language
- EKC : Ngura languages
- EKE : Eket language
- : Ekari language
- EKI : Eki language
- : Estonian language
- : Central Yambasa language
- eko : Koti language
- : Ekpeye language
- EKR : Yace language
- EKY : Red Karen language
- ELE : Elepi language
- ELH (disambiguation) : Hill Nubian languages
- eli : Nding language
- elk (disambiguation): Elkei language
- ell (disambiguation): Modern Greek
- el : Modern Greek
- ELM : Eleme language
- elo : El Molo language
- ELP : Piru Bay languages#Elpaputi
- ELX : Elamite language
- EMA : Ivbiosakon language
- EMB : Embaloh language
- EME : Emerillon language
- EMG : Meohang language
- EMI (disambiguation) : Mussau-Emira language
- EMK : Maninka language
- EMM : Comecrudan languages
- EMN : Eman language
- emo (disambiguation): Emok language
- EMP : Northern Embera language
- EMS : Alutiiq language
- emu (disambiguation): Muria language
- EMW : Emplawas language
- EMX : Erromintxela language
- : Ch’olti’ language
- ena : Apali language
- ENC : En language
- end : Li'o language
- ENF : Enets language
- ENI : Bengkulu language
- ENN : Engenni language
- eno : Enggano language
- : Enga language
- ENR : Emem language
- ENU (disambiguation) : Enu language
- env (disambiguation): Enwan language
- EOT : Eotile language
- EPI : Epie language
- ERA : Eravallan language
- erg (disambiguation): Erromanga language
- ERH : Eruwa language
- ERI eri : Ogea language
- ERO : Horpa language
- ERS : Ersu language
- ERT : Eritai language
- : Erokwanas language
- ESE : Ese Ejja language
- esh : Tati language (Iran)
- esk : Inupiat language
- ESL (disambiguation) : Egyptian Sign Language
- ESN : Salvadoran Sign Language
- ESO (disambiguation) : Estonian Sign Language
- esq : Esselen language
- ESS : Central Siberian Yupik language
- ETB : Eket language
- ETC : Etchemin language
- eth (disambiguation): Ethiopian sign languages
- ETN : Eton language (Vanuatu)
- ETO : Eton language
- ETR : Edolo language
- ETS : Afenmai language
- ETT : Etruscan language
- ETU : Ekoi language
- ETX : Eten language
- ETZ : Semimi language
- EUR (disambiguation) : Europanto
- eve (disambiguation): Even language
- : Ewondo language
- : Eyak language
- : Ezaa language
- EZE : Zekwe language
- FAA (disambiguation) : Fasu language
- fab : Annobonese language
- FAD (disambiguation) : Wagi language
- FAF : Fagani language
- fag : Finongan language
- FAH : Baissa Fali language
- FAI : Faiwol language
- FAK fak : Fang language (Cameroon)
- FAL : Fali languages (Cameroon)
- FAM : Fam language
- FAO (disambiguation) : Faroese language
- FAP : Palor language
- far : Fataleka language
- fas : Persian language
- fat (disambiguation): Fante dialect
- FAU : Fayu language
- fax (disambiguation): Fala language
- fay (disambiguation): Davani dialect
- faz : Northwestern Fars language
- FBL : Albay Bikol language
- FCS : Quebec Sign Language
- FER fer (disambiguation): Kaligi language
- FFI : Foia Foia language
- FFM : Maasina Fulfulde
- FGR : Fongoro language
- FIA (disambiguation) : Nobiin language
- : Fyer language
- FJ : Fijian language
- FIN fin (disambiguation): Finnish language
- FIP : Fipa language
- FIR (disambiguation) : Firan language
- fit : Meänkieli dialects
- : Fiwaga language
- fiz : Izere language
- : Kirya-Konzəl language
- : Kven language
- FLA : Montana Salish language
- : Foau language
- FLI : Fali of Mubi
- FLL (disambiguation) : Fali languages (Cameroon)
- FLM : Falam language
- FLN : Yalgawarra language
- FLR : Fuliiru language
- FMP : Fe'fe' language
- FMU : Muria language
- : Fania language
- FOD : Foodo language
- FOI : Foi language
- FOM : Foma language
- FOR for : Fore language
- fos : Siraya language
- FPE : Pichinglis
- : Fas language
- FRA : French language
- FRD : Fordata language
- fri : West Frisian language
- FRK : Old Frankish
- FRM : Middle French
- fro : Old French
- FRQ : Forak language
- FRT : Kiai language
- FSE : Finnish Sign Language
- FSS : Finland-Swedish Sign Language
- FUB : Fula language
- : Pulaar language
- fud : Futunan language
- fue (disambiguation): Fula language
- FUF : Pular language
- : Fula language
- : Fula language
- : Fungor language
- ful : Fula language
- FUM : Mfumte language
- FUN fun (disambiguation): Fulniô language
- : Fula language
- fur (disambiguation): Friulian language
- FUT : Futuna-Aniwa language
- fuu : Furu language
- : Fula language
- : Fuyug language
- : Fur language
- FWA : Fwâi language
- gac (disambiguation): Great Andamanese languages
- gad : Gaddang language
- GAE : Warekena language
- GAF : Gende language
- gah : Alekano language
- gai : Mbore language
- gaj : Gadsup language
- GAK : Gamkonora language
- gal : Galoli language
- gam : Kandawo language
- gao (disambiguation): Gants language
- gap : Gal language
- : Gataq language
- GAR gar (disambiguation): Galeya language
- gas (disambiguation): Bhili language
- gau : Ollari language
- GAV : Domung language
- gaw : Nobonob language
- : Borana language
- gaz : Oromo language
- GBA (disambiguation) : Gbaya languages
- : Kaytetye language
- GBC : Garawa language
- GBD : Garadjari language
- GBE (disambiguation) : Niksek language
- GBF : Gaikundi language
- GBG : Gbanzili language
- GBH : Fon language
- GBI : Galela language
- : Mandeali language
- GBM : Garhwali language
- GBN : Morokodo language
- GBO : Grebo language
- GBP (disambiguation) : Gbeya language
- : Bozom language
- GBR : Gwari language
- GBS : Ayizo language
- GBU : Gaagudju language
- : Gbanu language
- GBW (disambiguation) : Gabi-Gabi language
- : Phla language
- : Gwari language
- GCC : Mali language
- GCD : Yukulta language
- GCE : Galice language
- GCF : Antillean Creole French
- GCL : Grenadian Creole
- GCN : Korafe language
- GCR : French Guianese Creole
- GDA : Loarki language
- GDB (disambiguation) : Ollari language
- GDC : Warrungu language
- GDD : Gedaged language
- GDF : Guduf-Gava language
- : Ga'dang language
- GDH : Gajirrabeng dialect
- GDI : Baka language
- : Gurdjar language
- : Gadang language
- GDL : Dirasha language
- GDM : Laal language
- GDN : Umanakaina language
- GDO : Godoberi language
- : Mehri language
- GDR (disambiguation) : Wipi language
- GDS : Ghandruk Sign Language
- GDU : Gudu language
- GDX : Godwari dialect
- GEA : Geruma language
- GEB : Kire language
- GEC : Grebo language
- ged : Gade language
- : Gengle language
- GEH : Hutterite German
- GEI : Gebe language
- : Gen language
- : Yiwom language
- GEL gel (disambiguation): Ut-Ma'in language
- gen : Miju language
- : Geme language
- GES : Geser language
- : Gera language
- GEX gex : Garre language
- : Enya language
- : Ge'ez language
- GFK gfk : Patpatar language
- GFT : Gafat language
- : Sekele language
- GGA : Gao language
- GGB : Gbii language
- GGD : Gugadj language
- : Guragone language
- GGG : Gurgula language
- GGH : Spurious languages
- : Kungarakany language
- : Ganglau language
- GGM : Paman languages#Gugu Mini
- GGN : Gurung language
- : Gondi language
- GGT : Gitua language
- GGU : Gagu language
- GHA : Ghadamès language
- GHC : Classical Gaelic
- GHH : Ghale language
- : Geko Karen
- GHL : Hill Nubian languages
- GHN : Ghanongga language
- GHO (disambiguation) : Ghomara language
- GHR : Hindi languages#Ghera
- GHS : Guhu-Samane language
- GHT : Kutang language
- GIA : Kija language
- GIC : Gayle language
- GID : Gidar language
- gig : Goaria language
- : Bandjalang language
- GIM : Gimi language
- gin (disambiguation): Hinukh language
- gio : Gelao language
- GIP : West Arawe language
- : Gelao language
- GIR : Gelao language
- GIS (disambiguation) : North Giziga language
- git : Gitxsan language
- : Gelao language
- : Mbaka language
- GIZ : South Giziga language
- : Geji language
- : Koli language
- : Kuurn Kopan Noot language
- : Gonja language
- : Gujari language
- GKA : Guya language
- : Ndai language
- GKN (disambiguation) : Gokana language
- GKO (disambiguation) : Kok-Nar language
- GKP : Kpelle language
- GLA : Scottish Gaelic
- GLC : Bon Gula language
- GLD : Nanai language
- GLG : Galician language
- GLH : Pashayi language
- GLI : Kazukuru language
- GLJ : Gula Iro language
- GLL : Garlali language
- GLO : Galambu language
- GLR : Glaro-Twabo language
- GLV : Manx language
- : Glavda language
- : Gule language
- GMA (disambiguation) : Wunambal language
- GMB : Gula'alaa language
- GMD : Maghdi language
- GMM : Mbodomo language
- GMN : Koma language
- GMO (disambiguation) : Gamo-Gofa-Dawro language
- : Gumalu language
- GMV : Gamo-Gofa-Dawro language
- GMX : Kinga language
- : Mgbo language
- GNA : Kaansa language
- GNB : Gangte language
- GND : Zulgo-Gemzek language
- GNE : Izere language
- GNG : Ngangam language
- GNH : Lere language
- GNI : Guniyandi language
- : Gǁana language
- GNL : Biri language
- GNM : Ginuman language
- GNN : Dhuwal language
- GNO : Gondi language
- : Gana’ language
- GNR : Gureng Gureng language
- gnt : Guntai language
- GNU (disambiguation) : Gnau language
- GNW : Western Bolivian Guaraní
- GNZ : Baka language
- goa (disambiguation): Guro language
- gob : Playero language
- GOC : Mumeng language
- god (disambiguation): Godié language
- GOE : Gongduk language
- GOF : Gamo-Gofa-Dawro language
- gog : Gogo language
- GOI : Gobasi language
- GON : Gondi language
- GOP (disambiguation) : Yeretuar language
- gor (disambiguation): Gorontalo language
- GOS : Gronings dialect
- gou : Gawar language
- gow : Gorowa language
- goy (disambiguation): Goundo language
- GPA (disambiguation) : Gupa-Abawa language
- : Ghanaian Pidgin English
- GPN : Taiap language
- : Ga'anda language
- : Guiqiong language
- : Terêna language
- : Doba language
- : Gelao language
- GRA : Bhili language
- GRD : Guruntum language
- : Madi language (Papuan)
- GRH : Gbiri-Niragu language
- : Jabo language
- GRM : Kota Marudu Talantang language
- GRN (disambiguation) : Guarani dialects
- GRO : Groma language
- GRQ : Gorovu language
- GRS : Gresi language
- GRT : Garo language
- GRU (disambiguation) : Soddo language
- GRV : Grebo language
- : Gweda language
- GRX : Guriaso language
- gry (disambiguation): Grebo language
- : Guramalum language
- GSC : Gascon dialect
- GSE : Ghanaian Sign Language
- GSG : German Sign Language
- GSL : Gusilay language
- GSM (disambiguation) : Guatemalan Sign Language
- GSN (disambiguation) : Gusan language
- GSO : Biyanda-Buli language
- GSP : Wasembo language
- GSS : Greek Sign Language
- GTA : Guató language
- GTI : Nyanga-li language
- GTU : Aghu Tharrnggala language
- : Tenetehara language
- GUC : Wayuu language
- GUD : Dida language
- GUE : Gurindji language
- GUF (disambiguation) : Dhuwal language
- GUG : Guarani language
- : Guahibo language
- GUI (disambiguation) gui (disambiguation): Eastern Bolivian Guaraní
- guk (disambiguation): Gumuz language
- gul : Gullah language
- gum : Coconucan language
- gup : Gunwinggu language
- : Aché language
- gur : Frafra language
- gus : Francophone African Sign Language
- gut : Maléku language
- GUU : Yanomamö language
- : Duli language
- : Fon language
- : Gourmanchéma language
- : Gusii language
- GVA : Kaskihá language
- GVC : Wanano language
- : Duwet language
- : Golin language
- : Guajá language
- : Gulay language
- GVM : Gurmana language
- GVN : Guugu Yalandji language
- GVO (disambiguation) : Gavião of Jiparaná
- GVP : Timbira language
- gvr : Gurung language
- GVS : Gumawana language
- : Adnyamathanha language
- GWA : Mbato language
- GWB : Gwa language
- GWC : Kalami language
- GWD : Gawwada language
- GWE : Gweno language
- GWF : Gowro language
- GWG : Moo language
- GWI : Gwich’in language
- : Gǀui dialect
- : Awngthim language
- GWN : Gwandara language
- GWR : Gwere language
- GWT : Gawar-Bati language
- GWU : Bidjara language
- : Wunambal language
- : Gua language
- : Guere language
- gya (disambiguation): Northwest Gbaya language
- : Garus language
- GYD : Kayardild language
- GYE : Gyem language
- : Bidjara language
- : Ngbandi language
- : Kwasio language
- : Gayil language
- : Guaymí language
- : Guyanese Creole
- gyr : Guarayu language
- : Bidjara language
- GZA (disambiguation) : Ganza language
- : Gazi language
- : Gane language
- HAA haa : Hän language
- HAB hab (disambiguation): Vietnamese sign languages
- HAC : Gorani language
- had : Hattam language
- hae : Eastern Oromo language
- : Vietnamese sign languages
- HAG (disambiguation) hag (disambiguation): Hanga language
- HAI : Haida language
- : Hajong language
- HAL hal : Halang language
- ham (disambiguation): Hewa language
- han : Hangaza language
- hao : Hakö language
- HAP : Hupla language
- haq : Ha language
- har : Harari language
- HAS : Haisla language
- HAU hau : Hausa language
- HAV : Havu language
- hax : Haida language
- hay (disambiguation): Haya language
- HBA : Tetela language
- HBB (disambiguation) : Huba language
- HBO (disambiguation) : Ancient Hebrew language
- HBU : Habun language
- HDN : Haida language
- HDS : Honduras Sign Language
- : Hadiyya language
- HEA : Hmu language
- HEB : Hebrew language
- hed : Ngeté-Herdé language
- HEG : Helong language
- heh : Hehe language
- HEI : Heiltsuk dialect
- hem (disambiguation): Hemba language
- HGM : ǂAkhoe dialect
- HGW : Haigwai language
- HHI : Hoia Hoia language
- HHR : Jola-Felupe language
- HHY : Hoia Hoia language
- HIA : Lamang language
- hib : Hibito language
- HID : Hidatsa language
- HIG : Kamwe language
- HIH : Pamosu language
- : Hinduri language
- : Hijuk language
- hin : Hindi
- hir (disambiguation): Himarimã language
- hix : Hixkaryana language
- HJI : Haji language
- : Kahe language
- : Hunde language
- : Orokaiva language
- HKS : Chinese Sign Language
- HLA : Halia language
- HLD : Duan language
- : Hlersu language
- : Nga La language
- HMA : Mashan Miao
- HMB : Humburi Senni language
- HMC : Huishui Miao
- HMD hmd : A-Hmao language
- HME : Huishui Miao
- HMF : Hmong language
- HMG : Guiyang Miao
- HMH : Huishui Miao
- HMI : Huishui Miao
- HMJ : Gejia language
- : Ye-Maek language
- HMM : Mashan Miao
- HMN (disambiguation) : Hmongic languages
- HMP : Mashan Miao
- : Hmu language
- HMS : Hmu language
- HMT : Hamtai language
- HMU : Adang language
- : Hmong language
- HMW : Mashan Miao
- : Guiyang Miao
- : Hmong language
- HNE : Chhattisgarhi language
- : Khwe language
- : Hani language
- : Hmong language
- : Hanunó'o language
- : Kagani dialect
- HNU : Cuoi language
- HOA : Hoava language
- hob : Mari language (Madang Province)
- hoc : Ho language
- hod : Holma language
- hoe : Horom language
- hoh (disambiguation): Hobyót language
- HOI : Holikachuk language
- : Harauti dialect
- HOL : Holu language
- HOM : Homa language
- hoo : Holoholo language
- HOP hop : Hopi language
- HOS : Vietnamese sign languages
- hot : Hote language
- hov HOV (disambiguation) : Hovongan language
- how : Hani language
- hoy (disambiguation): Holiya language
- hoz : Hozo language
- HPO : Hpon language
- HPS : Hawaii Pidgin Sign Language
- HRC (disambiguation) : Tangga language
- HRE : Hrê language
- HRK : Haruku language
- HRM : Hmong language
- HRO : Haroi language
- HRR : Yalahatan language
- HRU : Hruso language
- HRW (disambiguation) : Tangga language
- : Riograndenser Hunsrückisch German
- HRZ : Harzandi dialect
- HSF : Huastec language
- HSH : Hungarian Sign Language
- HSL : Hausa Sign Language
- : Xiang Chinese
- HSS : Harsusi language
- HTI : Hoti language
- HTS : Hadza language
- HTU : Hitu language
- HTX : Hittite language
- hub : Huambisa language
- HUC : ǂHoan language
- HUD : Huaulu language
- HUF : Humene language
- : Huachipaeri language
- huh : Huilliche language
- hui : Huli language
- : Guiyang Miao
- huk : Hulung language
- hul (disambiguation): Keapara language
- hum : Hungana language
- hun (disambiguation): Hungarian language
- : Hu language
- HUP : Hupa language
- : Tsat language
- hut : Central Tibetan language
- HUU : Murui Huitoto language
- : Huave language
- : Nüpode Huitoto language
- HUY huy (disambiguation): Hulaulá language
- : Hunzib language
- HVA : Huastec language
- : Huave language
- HVK : Haveke language
- HVN : Hawu language
- HVV : Huave language
- HWA : Wané language
- : Hawaiian Pidgin
- HWO : Hwana language
- : Hya language
- IAI : Iaai language
- ian (disambiguation): Iatmül language
- IAP : Iapama language
- IAR : Purari language
- IBA : Iban language
- IBB : Ibibio language
- IBD : Iwaidja language
- IBE : Akpes language
- IBG : Ibanag language
- ibi : Okpamheri language
- IBL : Ibaloi language
- IBM (disambiguation) : Agoi language
- IBN : Ibino language
- IBR : Ibuoro language
- IBU ibu : Sahu language
- : Kalabari language
- ICA ica (disambiguation): Ede language
- ich : Etkywan language
- IDB : Indo-Portuguese creoles
- IDC : Idon language
- IDD : Ede language
- IDE : Idere language
- IDR : Indri language
- IDS : Idesa language
- IDT : Idalaka language
- IDU : Idoma language
- IFA : Ifugao language
- IFB : Ifugao language
- IFF : Utaha language
- : Tuwali language
- IFM : Fuumu language
- IFU : Ifugao language
- : Kallahan language
- IGB : Ebira language
- IGE (disambiguation) : Igede language
- : Igana language
- : Igala language
- IGM : Kanggape language
- IGN (disambiguation) : Moxos language
- igo : Isebe language
- IGS : Interglossa
- : Igwe language
- IHB : Iha language
- IHI : Ihievbe language
- IHP : Iha language
- : Gunai language
- III : Nuosu language
- IIN : Mantharta language
- IJC : Izon language
- : Biseni language
- : Ede language
- IJN : Kalabari language
- : Nembe language
- iki : Iko language
- IKK : Ika language (Nigeria)
- : Kulu language
- : Ikom language
- : Ikpeshi language
- IKR : Ikarranggal language
- : Inuvialuk language
- : Iku language
- : Ikwerre language
- : Ik language
- : Ikizu language
- ila : Ile Ape language
- ILB : Ila language
- ILG : Ilgar language
- ili : Ili Turki language
- : Ilongot language
- ill : Maranao language
- ILS : International Sign
- ilu : Wetarese language
- ILV : Ilue language
- : Galoli language
- IME : Imraguen language
- IMI : Anamgura language
- IML (disambiguation) : Miluk language
- IMN : Imonda language
- IMO : Kaugel language
- IMR : Imroing language
- IMS : Marsi
- : Milyan language
- : Inga Kichwa
- ing : Deg Xinag language
- : Inga Kichwa
- INL : Indonesian Sign Language
- INM : Minaean language
- INN inn (disambiguation): Isinai language
- ino : Inoke language
- INP : Iñapari language
- INS : Indo-Pakistani Sign Language
- INT : Intha dialect
- : Barbareño language
- IOR : Inor language
- IOU (disambiguation) : Tuma-Irumu language
- IPI : Ipili language
- : Inupiat language
- IPO (disambiguation) : Ipiko language
- : Iquito language
- : Ikwo language
- ire : Iresim language
- : Irarutu language
- IRI : Rigwe language
- IRN : Irantxe language
- IRR : Ta’Oi language
- iru : Irula language
- : Kamberau language
- : Iraya language
- isa : Isabi language
- ISC : Isconahua language
- ISD : Isnag language
- ISE ise : Italian Sign Language
- ISG : Irish Sign Language
- ish : Esan language
- ISI : Nkem-Nkum language
- isk : Ishkashimi language
- ISM : Masimasi language
- ISN : Isanzu language
- ISO (disambiguation) : Isoko language
- ISR : Israeli Sign Language
- ist : Istriot language
- ITB : Itneg language
- ITE : Itene language
- ITI : Itneg language
- ITK : Judeo-Italian languages
- ITL : Itelmen language
- ITM : Ibuoro language
- ITO ito : Itonama language
- : Iteri language
- ITS : Itsekiri language
- ITT : Itneg language
- ITU (disambiguation) itu (disambiguation): Inapang language
- ITV (disambiguation) : Itawis language
- : Ibuoro language
- ITX : Itik language
- : Itneg language
- : Itza’ language
- IUM : Iu Mien language
- IVB : Ivatan language
- IVV : Ivatan language
- IWK : Iwaak language
- IWM : Iwam language
- iwo : Iwur language
- IWS : Sepik Iwam language
- : Ixcatec language
- ixi : Ixil language
- : Ixil language
- IXL : Ixil language
- IYO : Mesaka language
- : West Teke language
- izi : Igboid languages
- : Izere language
- : Izi language
- JAA jaa : Jamamadí language
- : Hyam language
- JAC : Jakaltek language
- JAD : Jahanka language
- jae (disambiguation): Yabem language
- JAF : Jara language
- JAH (disambiguation) : Jah Hut language
- jai : Jakaltek language
- : Zazao language
- jak : Jakun language
- JAL : Yalahatan language
- jam (disambiguation): Jamaican Patois
- jan : Jandai language
- JAO : Yanyuwa language
- JAP : Jarawara dialect
- : Yaqay language
- jar (disambiguation): Jarawa language (Nigeria)
- JAS : Javanese language
- jat (disambiguation): Jakati language
- jau : Yaur language
- JAV : Javanese language
- JV : Javanese language
- JAX jax : Jambi Malay
- jay (disambiguation): Nhangu language
- jaz : Jawe language
- : Judeo-Berber language
- : Badjiri language
- JBJ : Arandai language
- JBK : Omati language
- : Nafusi language
- JBR : Jofotek-Bromnya language
- JBT : Djeoromitxi language
- : Jukun Takum language
- : Worrorra language
- JCS : Jamaican Country Sign Language
- JCT : Krymchak language
- JDA : Lahuli-Spiti language
- : Jadgali language
- JEB : Jebero language
- JEE : Jerung language
- : Cheng language
- jeh (disambiguation): Jeh language
- : Yei language
- : Jeri language
- JEL : Yelmek language
- : Jen language
- jet : Manem language
- : Jonkor Bourmataguil language
- JGB : Ngbee language
- JGE : Judaeo-Georgian
- : Jarawa language (Nigeria)
- JGO : Ngomba language
- : Jahai language
- JHS : Jhankot Sign Language
- JIA : Jina language
- jib (disambiguation): Jibu language
- JIC : Jicaquean languages
- : Bu language
- jie : Jilbe language
- jig (disambiguation): Jingulu language
- : Horpa language
- : Jiiddu language
- JIL jil : Jilim language
- jim : Jimi language (Cameroon)
- : Jiamao language
- : Lavrung language
- JIT : Jita language
- : Shuar language
- : Jino language
- JJR : Jarawa language (Nigeria)
- : S'gaw Karen language
- : Kubo language
- JKP : S'gaw Karen language
- JKR (disambiguation) : Koro language (India)
- : Labir language
- JLE : Ngile language
- JLS (disambiguation) : Jamaican Sign Language
- : Dima language
- JMB : Zumbun language
- JMC : West Kilimanjaro language
- JMD : Yamdena language
- : Jimi language (Nigeria)
- JML : Jumli language
- JMR : Kamara language
- JMS : Naki language
- : Omati language
- : Silacayoapan Mixtec
- JNA : Kinnauri language
- : Jandavra language
- : Wardaman language
- : Janji language
- : Yem language
- : Rawat language
- : Jaunsari language
- job : Fuliiru language
- jod : Maninka language
- jor : Jorá language
- jos (disambiguation): Levantine Arabic Sign Language
- : Jowulu language
- JPA : Jewish Palestinian Aramaic
- : Japanese language
- JPR : Judeo-Persian
- : Jaqaru language
- JRA : Jarai language
- JRR : Jiru language
- : Japreria language
- : Kagwahiva language
- JUB : Wannu language
- : Jurchen language
- jud : Maninka language
- : Hõne language
- : Ngadjuri language
- juk : Wapan language
- jul (disambiguation): Jirel language
- : Southern Burun language
- jun : Juang language
- : Jiba language
- jus : Jumla Sign Language
- : Wãpha language
- : Juray language
- : Javindo language
- : Javanese language
- : Jwira-Pepesa language
- : Gyalrong language
- : Judeo-Yemeni Arabic
- KAC kac : Jingpho language
- KAD : Adara language
- : Ketagalan language
- KAF : Katso language
- : Kajaman language
- : Fer language
- KAJ kaj : Kaje language
- kak : Kallahan language
- kam (disambiguation): Kamba language
- kan : Kannada language
- kao : Kassonke language
- kap : Bezhta language
- : Capanahua language
- kas (disambiguation): Kashmiri language
- kat : Georgian language
- kau : Kanuri language
- : Katukína language
- kaw KAW (disambiguation) : Kawi language
- kay : Kamayurá language
- kaz : Kazakh language
- KBA : Galaagu language
- KBB (disambiguation) : Sikiana language
- KBC : Kadiweu language
- KBE (disambiguation) : Umpila language
- KBF : Kakauhua language
- : Khams Tibetan language
- : Camsá language
- KBI : Kaptiau language
- : Kari language
- KBK : Grass Koiari language
- KBL : Kanembu language
- : Iwal language
- KBN : Kare language (Adamawa)
- KBO : Kaliko language
- KBP : Kabye language
- : Kamano language
- KBS : Kande language
- : Abadi language
- KBU : Sansi language
- : Dera language
- KBW : Kaiep language
- KBX : Kambot language
- : Kanuri language
- : Duhwa language
- KCA : Khanty language
- KCC : Lubila language
- KCD : Kanum language
- KCE : Kaivi language
- KCF : Ukaan language
- : Katab language
- KCH : Vono language
- KCI : Kamantan language
- : Kobiana language
- KCL : Kala language
- KCM (disambiguation) : Tar Gula language
- : Kinalakna language
- KCP : Kanga language
- : Kamo language
- KCR : Katla language
- KCS : Koenoem language
- KCT : Kaian language
- : Kami language (Tanzania)
- : Kete language
- : Kabwari language
- : Korandje language
- : Nyamwezi language
- : Kutu language
- : Yankunytjatjara language
- KDE (disambiguation) : Makonde language
- KDF : Mamusi language
- KDG : Seba language
- : Tem language
- : Kumam dialect
- : Karamojong language
- : Numèè language
- : Kimba language
- KDM : Kagoma language
- : Kunda language
- KDP (disambiguation) : Ninkyop-Nindem language
- : Koch language
- KDR : Karaim language
- KDS : Lahu language
- : Kuy language
- KDU : Hill Nubian languages
- : Sak language
- : Koneraw language
- KDX : Nyingwom language
- KDY : Keijar language
- : Mfumte language
- kea (disambiguation): Cape Verdean Creole
- KEB : Kele language (Gabon)
- KEC : Keiga language
- ked : Kerewe language
- kee : Keresan languages
- : Tese language
- : Keak language
- KEK (disambiguation) : Q’eqchi’ language
- kel : Kela language
- kem : Kemak language
- ken : Nyang language
- keo : Kakwa language
- kep : Kaikadi language
- ker : Kera language
- kes : Kugbo language
- : Kebu language
- kev : Kanikkaran language
- kew (disambiguation): Kewa language
- KEX : Kukna language
- : Kele language (Nigeria)
- KFA : Kodava language
- : Kolami language
- KFC (disambiguation) : Konda language (Dravidian)
- KFD : Koraga language
- : Kota language
- KFF : Koya language
- KFI (disambiguation) : Kurumba language
- : Kemie language
- : Kinnauri language
- : Kung language (Cameroon)
- KFM : Khunsari language
- : Kuk language
- : Maninka language
- : Korwa language
- : Korku language
- : Kutchi language
- KFS : Mandeali language
- : Katkari language
- KFW : Kharam language
- KFX : Kullu language
- : Kumaoni language
- : Koromfe language
- : Maninka language
- KGB (disambiguation) : Ma'ya language
- KGC : Tariang language
- KGD : Ta’Oi language
- : Komering language
- KGF : Kube language
- : Kusunda language
- KGH : Kalinga language
- KGI : Selangor Sign Language
- : Kham language
- : Kaiwá language
- KGL (disambiguation) : Bidjara language
- KGO : Krongo language
- KGP : Kaingang language
- : Kamoro language
- : Abun language
- KGS : Kumbainggar language
- : Somyev language
- KGU : Kobol language
- : Karon Dori language
- KGX : Kamaru language
- KGY : Kyirong-Kagate language
- : Khasi language
- : Tai Lü language
- : Tukang Besi language
- : Kanum language
- khe : Korowai language
- KHF : Khün language
- : Khams Tibetan language
- : Kehu language
- KHJ : Kuturmi language
- KHK : Mongolian language
- : Lusi language
- : Khandeshi languages
- kho : Saka language
- : Kapori language
- : Koyra Chiini language
- KHR : Kharia language
- KHS : Kasua language
- : Khamti language
- : Nkumbi language
- : Khwarshi language
- : Khowar language
- : Lega language
- : Kele language (Congo)
- : Keapara language
- KIA : Kim language
- KIB : Koalib language
- kid : Koshin language
- KIE : Aiki language
- kif : Kham language
- KIG : Kimaghima language
- KIH : Kilmeri language
- kii : Kitsai language
- kik : Gikuyu language
- kil : Kariya language
- kim : Mator language
- KIO (disambiguation) : Kiowa language
- kip : Kham language
- : Kosare language
- KIT kit : Agob language
- KIU kiu (disambiguation): Zazaki language
- KIV : Kimbu language
- : Kiwai language
- kix : Khiamniungan language
- : Kirikiri language
- kiz : Kissi language
- : Mlap language
- KJB : Q’anjob’al language
- KJC : Konjo language (Sulawesi)
- : Kiwai language
- KJE : Kisar language
- : Iranian Khalaj language
- : Khmu language
- : Khakas language
- : Khinalug language
- : Konjo language (Sulawesi)
- : Kham language
- : Kháng language
- : Kunjen language
- : Harijan Kinnauri language
- : Eastern Pwo language
- : Keresan languages
- KJR : Kurudu language
- KJS : Kewa language
- : Phrae Pwo language
- KJU : Kashaya language
- : Ramopa language
- : Kewa language
- : Bumthang language
- : Kakanda language
- : Kwerisa language
- KKC : Odoodee language
- : Kinuku language
- : Kakabe language
- : Tshangla language
- : Kalinga language
- KKI : Kagulu language
- : Kako language
- KKK (disambiguation) : Kokota language
- KKL : Kosarek language
- KKM : Kiong language
- KKN : Kon Keu language
- KKP : Koko-Bera language
- : Kaiku language
- KKR (disambiguation) : Kir-Balar language
- KKS : Giiwo language
- KKT : Koi language
- KKV : Kangean language
- : Kukuya language
- : Kohin language
- : Kaska language
- : Kiliwa language
- KLC (disambiguation) : Kolbila language
- : Kulung language
- KLF (disambiguation) : Kendeje language
- KLG : Kalagan language
- KLH : Weliki language
- KLI : Kalumpang language
- : Turkic Khalaj language
- : Kono language (Nigeria)
- : Kalagan language
- KLM (disambiguation) : Migum language
- : Nandi–Markweta languages
- klo : Kapya language
- : Kamasa language
- KLQ : Rumu language
- KLS : Kalash language
- KLT : Nukna language
- : Klao language
- : Maskelynes language
- : Moma language
- KLX : Koluwawa language
- : Adang language
- KMA : Konni language
- : Kimbundu
- KMC : Kam language
- KMD (disambiguation) : Kalinga language
- KME : Kpwe language
- : Kalam language
- KMI : Kami language
- : Kumarbhag Paharia language
- KMK : Kalinga language
- KML (disambiguation) : Kalinga language
- KMM : Kom language (India)
- : Awtuw language
- : Kwoma language
- KMP : Koma language
- KMQ : Kwama language
- KMR : Kurdish language
- KMS : Kamasau language
- KMT (disambiguation) : Kemtuik language
- KMU : Kanite language
- : Lanc-Patuá creole
- KMW : Komo language (Bantu)
- : Waboda language
- : Koma language
- KMZ : Khorasani Turkic language
- KNA : Kanakuru language
- : Kalinga language
- KNC : Kanuri language
- : Konda language (Papuan)
- KNF : Mankanya language
- KNG : Kongo language
- : Mainstream Kenyah language
- KNI : Kanufi language
- : Akatek language
- KNK : Kuranko language
- KNL : Keninjal language
- KNM : Kanamarí language
- KNN (disambiguation) : Maharashtrian Konkani
- : Kono language
- KNP : Kwanja language
- : Kintaq language
- : Kensiu language
- : Waninnawa language
- KNU : Kpelle language
- : Waia language
- : Ekoka !Kung
- KNX : Kendayan language
- : Kanyok language
- : Kalamsé language
- koa (disambiguation): Konomala language
- KOB (disambiguation) : Sanumá language
- KOC : Kpati language
- KOD : Kodi language
- KOE (disambiguation) : Baleesi language
- KOF : Kubi language
- : Kogi language
- KOH : Koyo language (Congo)
- : Kaba language
- kol : Kol language (Papua New Guinea)
- KOM : Komi language
- koo : Konjo
- KOP : Waube language
- : Kota language (Gabon)
- kou : Koke language
- : Kudu-Camo language
- kow : Kugama language
- : Coxima language
- : Koyukon language
- koz : Korak language
- KPA : Kutto language
- KPC : Baniwa language
- : Koba language
- KPE : Kpelle language
- KPF : Komba language
- : Kapingamarangi language
- KPH : Kplang language
- KPI : Kofei language
- : Karajá language
- : Kpan language
- KPL : Monzombo language
- KPM : Koho language
- KPN (disambiguation) : Kepkiriwát language
- KPO : Kposo language
- KPP : S'gaw Karen language
- KPQ : Korupun language
- : Korafe language
- KPS : Tehit language
- KPT : Karata language
- KPU : Kafoa language
- KPV (disambiguation) : Komi-Zyrian language
- KPW : Kobon language
- : Mountain Koiali language
- : Koryak language
- : Sabiny language
- KQA : Mum language
- : Kovai language
- : Doromu language
- : Koy Sanjaq Syriac language
- : Kalagan language
- : Kakabai language
- : Khe language
- : Kisankasa language
- : Koita language
- : Koromira language
- : Ayizo language
- : Kyenele language
- : Khisa language
- : Kaonde language
- : Konobo language
- : Kimré language
- : Krenak language
- : Momogun language
- : Kissi language
- : Klias River Kadazan language
- : Seroa dialect
- : Okolod language
- KQW : Kandas language
- : Mser language
- : Koore language
- : Korana language
- : Karkin language
- : Waimoa language
- : Panara language
- KRF : Koro language (Vanuatu)
- KRG : Korowai language
- : Kurama language
- : Kinaray-a language
- KRK : Kerek language
- : Krim language
- : Sapo language
- KRP : Dorop language
- : Lampung language
- : Brao language
- KRS : Kresh languages
- KRT : Kanuri language
- kru : Kurux language
- KRV : Brao language
- : Krahn language
- : Karon language
- : Kryts language
- : Kanum language
- KSA (disambiguation) : Shuwa-Zamani language
- KSB : Shambala language
- KSC : Kalinga language
- : Tolai language
- KSE : Kuni language
- KSF : Bafia language (Cameroon)
- KSG : Kusaghe language
- KSI : I'saka language
- : Kwale language
- KSK : Kansa language
- KSL : Mumeng language
- KSM : Kumba language
- KSN : Kasiguranin language
- KSO : Kofa language
- KSP : Kaba language
- : Kwaami language
- KSR : Borong language
- KSS : Kissi language
- kst : Winye language
- KSU : Khamyang language
- KSV : Kusu language
- : Kedang language
- : Kharia Thar language
- : Korwa language
- KTA : Katua language
- KTB : Kambaata language
- KTC : Kholok language
- : Western Desert language
- KTE : Central Tibetan language
- KTF (disambiguation) : Lega language
- : Kalkatungu language
- KTH (disambiguation) : Karanga language
- : Muyu language
- : Krumen language
- KTK : Kaniet language
- KTM (disambiguation) : Kurti language
- KTN : Karitiâna language
- KTO : Kuot language
- KTP : Piyo language
- KTS : Muyu language
- KTT : Wambon language
- KTU : Kituba language
- KTV : Phuong language
- : Kaxararí language
- : Kango language (Bas-Uélé District)
- : Juǀʼhoansi
- : Kwanyama dialect
- KJ : Kwanyama dialect
- kub : Kuteb language
- : Kwinsu language
- : 'Auhelawa language
- : Katu language
- : Kupa language
- kuh : Kushi language
- kui : Amonap language
- KUJ : Kuria language
- kuk (disambiguation): Kepo' language
- kul : Kulere language
- kum : Kumyk language
- kun : Kunama language
- : Kumukio language
- kup (disambiguation): Kunimaipa language
- : Karipuna language (Rondônia)
- kus (disambiguation): Kusaal language
- kut (disambiguation): Kutenai language
- : Upper Kuskokwim language
- : Teor-Kur language
- : Central Banda language
- : Western Desert language
- : Umpila language
- : Kunza language
- KVA : Bagvalal language
- KVB (disambiguation) : Kubu language
- : Kove language
- : Kui language (Indonesia)
- : Kalabakan language
- : Kabalai language
- : Boazi language
- KVH : Manggarainese language
- : Kwang language
- : Psikyɛ dialect
- kvk : Korean Sign Language
- : Kayaw language
- KVM : Kendem language
- : Kuna language
- : Dobel language
- KVP : Kola language
- : Geba Karen language
- KVR : Kerinci language
- KVS : Gurdjar language
- : Lahta language
- : Geko Karen
- : Kola language
- : Wersing language
- : Parkari Koli language
- : Red Karen language
- : Tsaukambo language
- KWB : Baa language
- KWC : Kwala language
- KWD (disambiguation) : Kwaio language
- : Kwerba language
- KWF : Kwara'ae language
- KWG (disambiguation) : Kaba Deme language
- KWH (disambiguation) : Kowiai language
- : Awa Pit language
- : Kwanga language
- KWK : Kwak'wala
- : Kofyar language
- : Kwambi dialect
- : Kwangali language
- KWO : Kwomtari language
- KWP : Kwadia language
- : Yamba language
- : Kwer language
- KWS : Kwese language
- : Kwakum language
- : Kaba language
- KWW : Kwinti language
- : Kongo language
- : Kwadi language
- : Kairiru language
- : Krobu language
- : Konso language
- : Brunei Malay
- : Kakihum language
- : Red Karen language
- : Ngaju language
- : Karo language
- : Keningau Murut language
- : Kaba So language
- : Lahta language
- KXL : Kurux language
- : Northern Khmer dialect
- : Kanowit language
- KXO : Kanoê language
- : Koli language
- : Kanum language
- : Koro language (New Guinea)
- : Kangjia language
- : Koiwat language
- : Kui language (India)
- : Kuvi language
- : Konai language
- : Kuba language
- KXY : Kayong language
- : Kerewo language
- kya : Kwaya language
- : Kalinga language
- KYC : Kyaka language
- : Karey language
- KYE : Krache language
- : Kuya language
- : Keyagana language
- : Karuk language
- : Kiput language
- : Karao language
- : Kamayo language
- kyl : Central Kalapuya language
- kym : Kpatili language
- : Karolanos language
- kyo : Kelon language
- : Kenga language
- : Kuruáya language
- : Kayan language (Borneo)
- KYT : Kayagar language
- : Red Karen language
- : Kayort language
- KYW : Kurmali language
- : Rapoisi language
- : Kambaira language
- KYZ : Kayabi language
- : Syer-Tenyer language
- : Kaibobo language
- : Kulango language
- : Taliabo language
- : Kosena language
- : Kaili language
- : Amami language
- : Dongolawi language
- : Kelabit language
- : Coastal Kadazan language
- : Kazukuru language
- : Kayeli language
- : Kais language
- : Makhuwa language
- KZO : Kaning'i language
- : Kaidipang language
- : Kinnauri language
- : Karang language
- : Dusun language
- : Dusun language
- : Kayupulau language
- : Komyandaret language
- : Kariri languages
- : Kamarian language
- : Bila language
- : Kalabra language
- laa : Subanon language
- lab : Minoan language
- LAC lac (disambiguation): Lacandon language
- LAD : Judaeo-Spanish
- LAE : Pattani language
- LAF : Lafofa languages
- lag (disambiguation): Rangi language
- LAH lah : Lahnda (Western Punjabi)
- lai (disambiguation): Lambya language
- LAK : Laka language (Nigeria)
- lal (disambiguation): Lalia language
- lam : Lamba language
- LAN (disambiguation) : Laru language
- lap (disambiguation): Laka language
- : Qabiao language
- LAR : Larteh language
- LAS : Lama language
- lat (disambiguation): Latin
- lau : Loloda language
- LAV : Latvian language
- law (disambiguation): Lauje language
- LAX (disambiguation) : Tiwa languages
- lay : Lama language (Burma)
- laz : Aribwatsa language
- LBA : Sak language
- LBB : Label language
- LBC (disambiguation) : Lakkja language
- : Tinani language
- LBG : Phunoi language
- LBI : La'bi language
- LBJ (disambiguation) : Ladakhi language
- LBK (disambiguation) : Bontoc language
- LBL : Albay Bikol language
- LBM : Lodhi language
- : Lamet language
- LBO : Laven language
- : Wampar language
- LBR : Lohorung language
- LBT : Lachi language
- LBV : Lavatbura-Lamusong language
- LBW lbw : Tolaki language
- : Lawangan language
- : Lamu-Lamu language
- : Lardil language
- LCC : Ma'ya language
- LCD (disambiguation) : Lola language
- LCE : Loncong language
- LCF : Lubu language
- LCH : Lucazi language
- LCL : Lisela language
- LCM : Tungag language
- LCP : Lawa language
- LCQ : Luhu language
- LCS : Lisabata-Nuniali language
- LDA : Dan language
- LDB : Idun language
- LDD : Luri language
- : Nyima language
- LDH : Daka language
- LDI : Kongo language
- : Lemoro language
- LDK : Leelau language
- LDL (disambiguation) : Kaan language
- LDM : Landoma language
- LDO : Loo language
- LDP : Tso language
- : Lufu language
- LEA : Lega language
- LEB : Lala-Bisa language
- lec : Leco language
- LED (disambiguation) : Lendu language
- LEE lee : Lyélé language
- LEF : Lelemi language
- leg (disambiguation): Enxet language
- LEH : Lenje language
- lei : Lemio language
- lek : Leipon language
- LEM lem : Mandi language
- leo : Leti language (Cameroon)
- LEP (disambiguation) : Lepcha language
- LER : Lenkau language
- LES : Lese language
- let : Lesing-Gelimi language
- leu : Kara language (Papua New Guinea)
- lev : Western Pantar language
- lew : Ledo Kaili language
- lex : Luang language
- LFA : Fa’ language
- LGA : Lungga language
- LGB : Laghu language
- LGH : Laghuu language
- : Lengilu language
- LGK : Lingarak language
- LGM : Lega language
- : Opuo language
- : Logba language
- LGR (disambiguation) : Lengo language
- LGT : Pahi language
- LGU : Longgu language
- : Gendza language
- LHA : Laha language
- : Laha language (Indonesia)
- LHI : Lahu language
- : Central Tibetan language
- : Lahanan language
- LHP : Lhokpu language
- LHS : Mlahsô language
- : Lo-Toga language
- LHU : Lahu language
- LIA : Limba language
- LIB lib : Likum language
- LIC : Hlai language
- lid : Nyindrou language
- lie (disambiguation): Ngiri language
- LIF : Limbu language
- : Ligbi language
- LIH : Lihir language
- : Ligurian (Romance language)
- : Lika language
- LIL lil : Lillooet language
- lim : Limburgish language
- : Liki language
- lip (disambiguation): Likpe language
- : Libido language
- LIR : Liberian Kreyol language
- LIS : Lisu language
- LIT lit : Lithuanian language
- liu (disambiguation): Logorik language
- LIV : Livonian language
- liw : Col language
- : Liabuku language
- : Central Banda language
- liz : Binza language
- : Nhangu language
- : Rampi language
- : Laiyolo language
- : Li'o language
- LJP : Lampung language
- : Yirandhali language
- : Lower Burdekin languages
- : Idalaka language
- : Luhya language
- : Kucong language
- : Mamaindê language
- : Soga language
- : Lakha language
- : Laki language
- : Remun language
- LKL (disambiguation) : Laeko language
- : Kalaamaya language
- : Lakon language
- : Khayo language
- : Päri language
- LKS : Luhya language
- : Lakota language
- : Koyo language (Sudan)
- LLA : Lala-Roba language
- LLB (disambiguation) : Lomwe language
- LLC : Lele language (Guinea)
- LLD : Ladin language
- LLE (disambiguation) : Lele language (Papua New Guinea)
- LLF : Hermit language
- LLG : Lole language
- : Lamu language
- LLI : West Teke language
- LLJ : Ledji-Ledji language
- LLK : Lelak language
- LLL : Lilau language
- : Lasalimu language
- LLN : Lele language (Chad)
- LLO : Ta’Oi language
- : North Efate language
- LLQ : Lolak language
- LLS : Lithuanian Sign Language
- LLU : Lau language (Malaita)
- : Lauan language
- LMA : Limba language
- LMB : Malmariv language
- LMC : Limilngan language
- LMD : Lumun language
- LME : Peve language
- LMF : South Lembata language
- LMG : Lamogai language
- LMI : Mangbetu language
- : Mingar language
- : Lamkang language
- LML (disambiguation) : Raga language
- LMM (disambiguation) : Tampuon language
- LMN : Banjari language
- LMP : Limbum language
- : Lamatuka language
- LMR : Lamalera language
- LMS : Limousin dialect
- LMT : Musi language
- LMU : Lamenu language
- : Lomaiviti language
- : Lake Miwok language
- : Laimbue language
- : Lamboya language
- : Carolina Algonquian language
- LNA : South Banda language
- LNB : Ovambo language
- LNC : Languedocien dialect
- : Lun Bawang language
- : Lombardic language
- LNH : Lanoh language
- : Daantanai’ language
- : Linngithigh dialect
- : South Banda language
- LNO : Lango language (South Sudan)
- LNS : Nso language
- LNT : Bengkulu language
- LNU : Longuda language
- : Wanggamala language
- : Yaka language (Congo–Angola)
- LOA loa (disambiguation): Loloda language
- LOB lob : Lobi language
- LOC : Onhan language
- lod (disambiguation): Berawan language
- loe : Saluan language
- LOF : Logol language
- log : Logo language
- loh : Narim language
- LOI : Lomakka language
- : Lou language (Austronesian)
- lok : Loko language
- lom : Loma language
- lon : Malawi Lomwe language
- loo : Lombo language
- LOP lop : Lopa language
- : Bala language
- LOR : Lorhon language
- los : Loniu language
- lot : Lotuko language
- lou : Louisiana Creole French
- LOV : Loloish languages#Lopi
- low : Kinabatangan language
- lox (disambiguation): Loun language
- loy : Central Tibetan language
- LPA : Lelepa language
- LPE : Lepki language
- LPO : Lipo language
- LPX : Lopit language
- LRA (disambiguation) : Laraʼ language
- LRC : Luri language
- : Laurentian language
- LRG : Laragiya language
- LRI : Marachi language
- LRK (disambiguation) : Loarki language
- : Larestani language
- LRM : Luhya language
- LRN : Lorang language
- LRO : Laro language
- LRR : Lohorung language
- LRT : Larantuka Malay
- LRV : Larevat language
- LRZ : Lemerig language
- LSD (disambiguation) : Lishana Deni
- LSE : Losengo language
- LSG (disambiguation) : Lyons Sign Language
- LSH : Lish language
- LSI : Lashi language
- LSL : Latvian Sign Language
- LSM : Samia language
- LSO : Laotian sign languages
- LSP : Panamanian Sign Language
- LSR : Aruop language
- LSS : Sindhi language
- LST : Trinidadian Sign Language
- : Mauritian Sign Language
- LTC : Middle Chinese
- : Latgalian language
- LTI : Leti language
- : Mamaindê language
- LTO : Luhya language
- LTS : Masaba language
- LTU : Latu language
- lub : Luba-Katanga language
- lu : Luba-Katanga language
- luc : Aringa language
- LUE : Luvale language
- LUF : Laua language
- lug : Luganda
- : Luiseño language
- : Luna language
- : Lunana dialect
- LUL : Olu’bo language
- lum : Nyemba language
- LUP : Lumbu language
- : Lucumi language
- lut (disambiguation): Lushootseed language
- luv : Luwati language
- : Luo language (Cameroon)
- : Luhya language
- luz (disambiguation): Luri language
- : Lavukaleve language
- LVS : Latvian language
- : Levuka language
- LWA : Lwalu language
- : Lewo Eleng language
- : Luhya language
- LWL : Lawa language
- LWM : Bisu language
- LWO : Jur language
- : Lewotobi language
- : Lawu language
- LWW : Lewo language
- lya : Laya dialect
- : Lyngngam language
- : Luyana language
- : Classical Chinese
- : Litzlitz language
- : Laz language
- maa : Tecóatl Mazatec
- MAD : Madurese language
- MAE mae (disambiguation): Barkul language
- MAF : Mafa language
- MAG mag : Magahi language
- MH : Marshallese language
- maj : Jalapa Mazatec language
- MAK mak : Makassarese language
- man (disambiguation): Mandinka language
- : Chiquihuitlán Mazatec
- mas : Maasai language
- MAT mat (disambiguation): Matlatzinca language
- MAU mau (disambiguation): Mazatecan languages
- MAV : Mawé language
- MAW maw : Mampruli language
- max : North Moluccan Malay
- MAZ : Mazahua language
- MBA (disambiguation) : Higaonon language
- MBB : Western Bukidnon language
- MBC : Macushi language
- MBD : Agusan language
- mbe MBE (disambiguation) : Molala language
- MBF : Malay trade and creole languages#Baba Malay
- MBG : Mamaindê language
- MBH (disambiguation) : Mangseng language
- MBI : Ilianen language
- MBJ : Nadëb language
- MBK : Malol language
- MBL : Maxakalí language
- MBM : Mbama language
- : Macaguán language
- MBP : Wiwa language
- : Maisin language
- MBR : Nukak language
- MBS : Sarangani language
- MBT : Matigsalug language
- MBU : Mbula-Bwazza language
- : Mbulungish language
- MBW : Maring language
- MBX : Mari language (Sepik)
- : Memoni language
- MCA : Maká language
- MCB : Machiguenga language
- MCC : Bitur language
- MCD : Yaminawa language
- MCF : Matsés language
- MCG (disambiguation) : Mapoyo-Yabarana language
- MCH : Ye'kuana language
- MCI : Mesem language
- : Mvanip language
- MCK : Mbunda language
- MCL : Macaguaje language
- MCM : Kristang language
- MCN : Massa language
- MCP : Makaa language
- MCQ : Ese language
- MCR : Menya language
- MCT : Mengisa language
- MCU : Mambila language
- MCV : Minanibai language
- MCW : Mawa language (Chad)
- : Mpiemo language
- : Watut language
- MCZ : Mawan language
- MDA : Mada language
- MDB : Morigi language
- MDC : Male language (Papuan)
- MDD : Mbum language
- MDE : Maba language
- MDG (disambiguation) : Masalit language
- MDH : Maguindanao language
- MDI : Mamvu language
- MDJ : Mangbetu language
- MDK : Mangbutu language
- MDL : Maltese Sign Language
- MDM : Mayogo language
- MDN : Mbati language
- MDO : Biyanda-Buli language
- MDP : Mbala language
- : Mbole language
- MDS : Maria language (Papua New Guinea)
- MDT : Mbere language
- MDU : Mboko language
- : Atatláhuca–San Miguel Mixtec
- MDW (disambiguation) : Mboshi language
- MDX : Dizin language
- MDY : Maale language
- : Suruí do Pará language
- MEA : Menka language
- MEB : Ikobi language
- MEC : Mara language
- MED : Melpa language
- mee : Mengen language
- MEF : Megam language
- MEG meg : Tîrî language
- MEH : Nuyoo Mixtec
- mei : Midob language
- MEK : Mekeo language
- mel : Melanau language
- men (disambiguation): Mende language
- MEO (disambiguation) : Kedah Malay
- MEP : Miriwoong language
- MEQ : Merey language
- mer : Meru language
- MES : Masmaje language
- met : Mato language
- MEV : Mano language
- mew : Maaka language
- MFA : Pattani Malay
- MFB : Bangka Malay
- MFC : Mba language
- MFD : Mendankwe-Nkwen language
- MFE : Mauritian Creole
- MFF : Naki language
- MFG : Mixifore language
- : Matal language
- MFI : Wandala language
- MFJ : Mefele language
- : North Mofu language
- MFL : Putai language
- MFM : Marghi South language
- MFN : Mbembe language
- MFO : Mbe language
- MFP : Malay trade and creole languages#Macassar Malay
- MFR : Marrithiyel language
- MFS : Mexican Sign Language
- MFT : Mokerang language
- MFU : Mbwela language
- : Mulaha language
- : Melo language
- MGA : Middle Irish
- MGB : Mararit language
- MGC : Morokodo language
- MGD : Moru language
- MGE : Doba language
- MGF : Maklew language
- : Mpumpong language
- MGH : Makhuwa language
- MGI : Jili language
- MGK (disambiguation) : Mawes language
- MGL : Idne language
- MGM (disambiguation) : Mambai
- MGN : Ngbandi language
- MGO : Meta' language
- MGP : Magar language
- : Malila language
- MGR (disambiguation) : Mambwe-Lungu language
- MGS : Manda language (Tanzania)
- MGU (disambiguation) : Mailu language
- MGV : Matengo language
- MGW : Matumbi language
- MGX : Omati language
- MGY : Mbunga language
- MHA : Manda language (India)
- : Mahongwe language
- MHC : Mocho’ language
- MHD : Mbugu language
- : Mah Meri language
- MHG : Marrgu language
- MHI : Ma'di language
- : Moghol language
- MHK : Nga'ka language
- MHL : Mauwake language
- : Moniga language
- MHN : Mòcheno language
- : Mashi language
- MHP : Malay trade and creole languages#Balinese Malay
- MHQ : Mandan language
- MHS : Buru language
- MHT : Mandawaca language
- MHV : Arakanese language
- : Ma'anyan language
- MHZ (disambiguation) : Mor language (Austronesian)
- mia : Miami-Illinois language
- MID : Mandaic language
- MIF : Mofu-Gudur language
- MIH : Chayuco-Jamiltepec Mixtec
- MIK : Mikasuki language
- MIM : Silacayoapan Mixtec
- : Miskito language
- mir (disambiguation): Isthmus Mixe
- MIS : ISO 639-3#Non-language codes
- : Amdang language
- : Akoye language
- : Spurious languages
- MJD : Konkow language
- : Monguor language
- : Mbamba Bay language
- : Kim Mun language
- MJJ : Mawak language
- MJK : Matukar language
- MJM (disambiguation) : Medebur language
- : Mebu language
- : Manna-Dora language
- : Karbi language
- : Santali language
- : Mahican language
- : Majhi language
- MKA : Mbre language
- MKB : Mal Paharia language
- MKC : Siliput language
- MKD : Macedonian language
- MKE : Gamit language
- : Miya language
- MKG : Mak language
- : Dhatki language
- : Mokilese language
- MKK (disambiguation) : Byep language
- MKL : Mokole language (Benin)
- MKM : Moklen language
- MKN : Malay trade and creole languages#Kupang Malay
- MKO : Mingang Doso language
- MKP : Moikodi language
- : Bay Miwok language
- MKR : Malas language
- MKS : Silacayoapan Mixtec
- MKT : Vamale language
- MKU : Maninka language
- MKV : Mavea language
- : Kituba language
- : Kinamigin language
- MKY : Taba language
- : Makasae language
- MLB (disambiguation) : Mbule language
- MLC : Caolan language
- MLD : Ormuri language
- MLE : Manambu language
- MLF : Mal language
- MLG : Malagasy language
- MLH : Mape language
- MLI : Malimpung language
- : Miltu language
- MLK (disambiguation) : Ilwana language
- MLL : Malua Bay language
- MLM : Mulam language
- MLN (disambiguation) : Malango language
- MLO : Mlomp language
- MLP : Bargam language
- : Kassonke language
- MLR : Vame language
- MLS (disambiguation) : Masalit language
- MLT : Maltese language
- MLV : Mwotlap language
- : Moloko language
- MLX : Malfaxal language
- : Malay language
- : Aklan language
- MMA : Mama language
- MMB (disambiguation) : Momina language
- MMC : Mazahua language
- MMD : Maonan language
- MME : Mae language
- MMF : Mundat language
- MMG : North Ambrym language
- MMH : Mehinaku language
- MMI : Musar language
- MMJ : Majhwar language
- MML : Mok language
- MMM : Maii language
- MMO : Mangga Buang language
- MMP : Siawi language
- : Musak language
- MMR : Qo Xiong language
- MMS : Mam language
- MMT : Malalamai language
- MMU : Central Yambasa language
- MMV : Miriti language
- MMW : Emae language
- MMX : Madak language
- : Migaama language
- MMZ : Ngiri language
- MNA : Mbula language
- MNB : Muna language
- MNC : Manchu language
- : Mondé language
- MNF : Mundani language
- MNG (disambiguation) : Mnong language
- : Mono language (Congo)
- MNL mnl : Malmariv language
- MNM (disambiguation) : Mapena language
- MNN : Mnong language
- MNP : Min Bei
- : Minriq language
- MNR : Mono language (California)
- MNS : Mansi language
- MNT : Mayi-Kulan language
- MNU : Mer language
- : Rennellese language
- : Mon language
- : Mantion language
- : Makhuwa language
- moa (disambiguation): Mwan language
- mob : Monpa people
- mod : Mobilian Jargon
- moe : Innu language
- MOF : Mohegan-Pequot language
- mog : Mongondow language
- MOH : Mohawk language
- : Monzombo language
- : Morori language
- mom (disambiguation): Chorotega language
- mon : Mongolian language
- moo : Monom language
- MOP : Mopan Maya language
- : Mor language (Papuan)
- MOR : Moro language
- MOS : Mossi language
- mot : Barí language
- MOV : Mojave language
- MOW mow : Bangi language
- mox : Molima language
- moy : Shakacho language
- MPA : Mpoto language
- MPB : Malak-Malak language
- MPC : Mangarayi language
- MPD : Piro language (Peru)
- MPE : Majang language
- MPF : Mam language
- MPG : Azumeina language
- MPH : Maung language
- MPI : Mpade language
- : Western Desert language
- MPK : Mbara language
- MPL : Watut language
- MPN : Mindiri language
- MPO : Miu language
- MPP : Migabac language
- : Matsés language
- MPR : Vangunu language
- MPS : Dadibi language
- MPT : Mian language
- MPU : Makurap language
- MPV : Mungkip language
- MPW : Mapidian language
- MPX (disambiguation) : Misima language
- : Mapia language
- : Mpi language
- : Maba language (Indonesia)
- MQB : Mbuko language
- : Mangole language
- : Mainstream Kenyah language
- : Matepi language
- MQF : Momuna language
- : Kutai Malay
- MQI : Mariri language
- : Mamasa language
- : Agusan language
- : Marquesan language
- : Moronene language
- : Modole language
- MQP : Manipa language
- : Dusun language
- MQR : Mander language
- : West Makian language
- MQT : Mok language
- : Mandari dialect
- : Mosimo language
- : Murupi language
- : Mamuju language
- : Manggarainese language
- : Malasanga language
- MRA : Mlabri language
- MRB : Sungwadia language
- MRD : Magar language
- MRE (disambiguation) : Martha's Vineyard Sign Language
- MRF : Elseng language
- MRG : Mishing language
- MRH : Mara language
- MRK (disambiguation) : Hmwaveke language
- MRL : Mortlockese language
- MRN : Cheke Holo language
- MRO : Mru language
- MRP : Morouas language
- MRR : Maria language (India)
- MRS : Maragus language
- MRT : Margi language
- MRU : Mono language (Cameroon)
- MRV : Mangareva language
- MRX : Dineor language
- MRY : Mandaya language
- MSB : Masbateño language
- MSC : Maninka language
- MSD : Mayan Sign Language
- MSE : Musey language
- MSF : Mekwei language
- MSG : Moraid language
- MSH : Malagasy language
- MSI : Malay trade and creole languages#Sabah Malay
- MSJ : Ma language
- MSK : Mansaka language
- MSL : Molof language
- MSM : Agusan language
- MSN (disambiguation) : Vurës language
- MSO : Mombum language
- MSP : Maritsauá language
- : Caac language
- MSR : Mongolian Sign Language
- MSS : Masela language
- MST : Mandaya language
- MSU : Musom language
- MSV : Maslam language
- MSW : Sua language
- MSX (disambiguation) : Moresada language
- MSY : Aruamu language
- : Momare language
- MTA : Cotabato Manobo language
- MTB : Anyin language
- MTC : Munit language
- MTD : Mualang language
- : Mono language (Solomon Islands)
- MTF : Nor language
- MTG : Goliath language
- MTH : Munggui language
- MTI : Maiwa language (Papuan)
- MTJ : Moskona language
- MTK : Mbə’ language
- MTL : Montol language
- MTM : Mator language
- MTN : Matagalpa language
- MTP : Wichí Lhamtés Nocten
- : Muong language
- MTR (disambiguation) : Mewari language
- MTS : Yora language
- MTT : Mota language
- MTV (disambiguation) : Asaro'o language
- MTW : Magahat language
- : Nabi language
- : Mam language
- MUA : Mundang language
- MUB : Mubi language
- MUC : Mbu’ language
- mud (disambiguation): Medny Aleut language
- : Media Lengua
- MUG mug (disambiguation): Musgu language
- MUH : Mündü language
- MUI : Musi language
- : Mabire language
- muk : Mugom dialect
- mul : ISO 639-3#Non-language codes
- mum (disambiguation): Maiwala language
- : Nyong language
- MUP : Malvi language
- : Qo Xiong language
- mur : Murle language
- mus : Muscogee language
- mut (disambiguation): Muria language
- : Yaaku language
- : Muthuvan language
- MUW : Mundari language
- MUX : Kaugel language
- : Muyang language
- : Mursi language
- MVA : Manam language
- MVB : Mattole language
- MVC : Mam language
- MVD (disambiguation) : Mamboru language
- : Mire language
- : Miyako language
- MVJ : Mam language
- : Mekmek language
- MVL : Mbara language (Australia)
- MVM : Muya language
- : Minaveha language
- MVP (disambiguation) : Duri language
- : Moere language
- MVS (disambiguation) : Massep language
- MVT : Mpotovoro language
- : Marfa language
- : Tagol language
- MVW : Makonde language
- : Meoswar language
- : Maiya language
- MVZ : Mesqan language
- MWA : Mwatebu language
- mwb : Juwal language
- MWC : Are language
- MWD : Mudbura language
- MWE : Mwera language
- MWG : West Arawe language
- MWH : Mouk-Aria language
- : Sekele language
- : Kita Maninka language
- MWL : Mirandese language
- MWM : Sar language
- MWO : Peterara language
- : Kalaw Lagaw Ya
- : Mün language
- MWR : Marwari language
- MWS : Meru language
- : Moken language
- MWU : Mittu language
- : Mentawai language
- : Mediak language
- : Mosiro language
- : Silacayoapan Mixtec
- : Silacayoapan Mixtec
- : Manyika dialect
- : Modang language
- : Mele-Fila language
- : Malgbe language
- : Mbangala language
- : Mvuba language
- : Mozarabic language
- : Miju language
- : Monumbo language
- : Fon language
- : Meramera language
- : Moi language
- : Mbowe language
- : Midland Mixe
- : Murik Kayan language
- : Chayuco-Jamiltepec Mixtec
- : Maɗa language
- : Silacayoapan Mixtec
- : Nambu language
- : Maninka language
- : Masela language
- : Nyanga-li language
- MYD : Maramba language
- MYF myf (disambiguation): Bambassi language
- : Manta language
- : Makah language
- : Meena
- : Mangaya language
- MYK : Minyanka language
- MYL : Moma language
- : Me'en language
- myo : Anfillo language
- : Pirahã language
- : Maninka language
- MYR (disambiguation) : Munichi language
- MYS : Mesmes language
- MYT (disambiguation) : Mandaya language
- MYU : Munduruku language
- MYW : Muyuw language
- : Masaba language
- : Macuna language
- : Mandaic language
- MZC : Norwegian Sign Language
- : Limba language (Cameroon)
- : Morawa language
- : Monastic sign languages
- : Wichí Lhamtés Güisnay
- MZI : Ixcatlán Mazatec
- : Maninka language
- : Mambila language
- : Isthmus Mixe
- MZM : Mumuye language
- : Matipuhy language
- MZP : Movima language
- : Mori Atas language
- : Marúbo language
- : Macanese language
- MZT : Mintil language
- : Inapang language
- : Manza language
- : Deg language
- : Mawayana language
- : Mozambican Sign Language
- : Maiadomu language
- NAA : Namla language
- NAB nab : Nambikwara language
- NAC : Narak language
- NAD : Nijadali language
- NAE : Naka'ela language
- NAF : Nabak language
- nag : Nagamese Creole
- : Nalu language
- nak (disambiguation): Nakanai language
- NAL : Nalik language
- nam : Ngan’gityemerri language
- nan : Min Nan
- : Khoekhoe language
- NAR : Guta language
- nas (disambiguation): Naasioi language
- nat : Hungworo language
- NAV : Navajo language
- NAW : Nawuri language
- : Nakwi language
- nay : Ngarrindjeri language
- naz (disambiguation): Coatepec Nahuatl
- NBA (disambiguation) : Nyemba language
- NBB : Ndoe language
- NBC (disambiguation) : Chang language
- NBD : Ngbinda language
- : Konyak language
- NBG : Nagarchal language
- : Ngamo language
- NBI : Sopvoma language
- : Gurindji language
- NBK : Nake language
- NBL : Southern Ndebele language
- NBM : Mbaka language
- NBO : Nkukoli language
- NBP : Nnam language
- : Nggem language
- NBR : Gbantu language
- NBT : Na language
- NBU : Zeme language
- NBV : Meta' language
- NBW : Ngbandi language
- NBX : Ngura languages
- : Ningera language
- NCA : Iyo language
- NCB : Central Nicobarese languages
- NCC : Ponam language
- NCD : Nachering language
- NCE : Yalë language
- NCF : Notsi language
- NCH : Huasteca Nahuatl
- NCI : Classical Nahuatl language
- : Sierra Puebla Nahuatl
- NCK (disambiguation) : Nakkara language
- NCL : Michoacán Nahuatl
- NCM : Nambu language
- NCN : Nauna language
- NCO : Nagovisi language
- NCP : Mfumte language
- NCR : Noni language
- NCS : Nicaraguan Sign Language
- NCT : Chothe language
- NCU : Chumburung language
- NCX (disambiguation) : Central Puebla Nahuatl
- : Natchez language
- NDA : Ndasa language
- NDB : Nsei language
- NDC : Ndau dialect
- NDD : Nde language
- NDE (disambiguation) : Northern Ndebele language
- NDG : Ndengereko language
- NDH (disambiguation) : Ndali language
- NDI : Chamba Leko
- : Ndamba language
- NDK : Ndaka language
- NDL : Ndolo dialect
- NDM : Ndam language
- NDN : Ngondi language
- : Ndonga dialect
- NG : Ndonga dialect
- NDP : Ndo language
- : Ndombe language
- NDR : Ndoro language
- NDU : Dii languages
- NDV : Ndut language
- : Ngiri language
- : Nduga language
- : Lutos language
- : Ndogo language
- NEA : Ngadha language
- NEB : Tura language
- NEC (disambiguation) : Nedebang language
- nee (disambiguation): Kumak language
- nef : Nefamese
- NEG : Negidal language
- neh : Nyen language
- nei : Hittite language
- : Neko language
- : Neku language
- NEM : Nemi language
- nen : Nengone language
- neo : List of unclassified languages according to the Ethnologue#Asia
- NEP : Nepali language
- : Midland Mixe
- NER : Yahadian language
- nes : Kinnauri language
- NET : Nete language
- neu (disambiguation): Neo (constructed language)
- NEV (disambiguation) : Nyaheun language
- NEX : Nambu language
- ney (disambiguation): Neyo language
- nez : Nez Perce language
- NFA : Dhao language
- NFD (disambiguation) : Ahwai language
- : Ahwai language
- : Ahwai language
- NFL (disambiguation) : Äiwoo language
- NFR : Nafaanra
- NFU : Mfumte language
- NGA : Ngbaka Gbaya language
- NGC : Ngombe language (Bantu)
- NGD : Ngando language (Central African Republic)
- NGE : Mankon language
- NGG : Ali language
- NGH : Nǁng language
- NGI : Ngizim language
- : Ngie language
- : Dalabon language
- NGL : Lomwe language
- NGM : Ngatikese Creole
- NGN : Ngwo language
- NGO (disambiguation) : Ngoni language
- NGP : Ngulu language
- : Ngoreme language
- : Nanggu language
- NGS : Gvoko language
- NGT : Ta’Oi language
- : Guerrero Nahuatl
- : Nagumi language
- : Ngwaba language
- : Nggwahyi language
- : Tibea language
- : Central Teke language
- NHA : Nhanda language
- NHC : Isthmus Nahuatl
- NHD : Ava Guarani language
- : Huasteca Nahuatl
- NHF : Nhuwala language
- : Tetelcingo Nahuatl
- NHH (disambiguation) : Nahari language
- NHI : Sierra Puebla Nahuatl
- NHJ : Sierra Puebla Nahuatl
- NHK (disambiguation) : Isthmus Nahuatl
- NHM : Morelos Nahuatl
- NHN : Tlaxcala–Puebla Nahuatl
- : Takuu language
- NHP : Isthmus Nahuatl
- : Tehuacan–Zongolica Nahuatl
- NHR : Naro language
- NHS : Tehuacan–Zongolica Nahuatl
- NHT : Ometepec Náhuatl language
- NHU : Noni language
- NHV : Temascaltepec Nahuatl
- : Huasteca Nahuatl
- : Isthmus Nahuatl
- NHY : Tehuacan–Zongolica Nahuatl
- NHZ : Tehuacan–Zongolica Nahuatl
- NIA : Nias language
- NIB : Nakama language
- NID : Ngandi language
- NIE : Niellim language
- NIF : Nek language
- NIG : Ngalakgan language
- NIH (disambiguation) : Nyiha language
- NII : Nii language
- : Ngaju language
- nik : Southern Nicobarese language
- nil : Nila language
- nim (disambiguation): Iramba language
- nin : Ninzo language
- NIO : Nganasan language
- NIR : Nimboran language
- NIS : Nimi language
- nit : Naiki language
- NIU : Niuean language
- : Nivkh language
- : Nimo language
- nix (disambiguation): Hema language
- : Ngiti language
- : Ningil language
- NJA : Nzanyi language
- : Nocte language
- : Ndonde language
- : Lotha language
- : Wambaya language
- : Njen language
- : Nyolge language
- NJM : Angami language
- NJN : Zeme language
- : Mongsen Ao language
- : Njerep language
- NJS : Nisa language
- : Ngadjunmaya language
- : Kunyi language
- : Njem language
- : Nishi language
- NKA : Nkoya language
- : Maring language (India)
- NKC : Nkongho language
- : Koireng language
- NKE : Duke language
- NKF : Inpui language
- : Nekgini language
- : Kheza language
- NKI : Khoirao language
- : Nakai language
- NKK : Nokuku language
- : Nambu language
- : Mbunda language
- NKO : Nkonya language
- NKP : Niuatoputapu language
- : Nkami language
- NKS : Asmat language
- NKT (disambiguation) : Nyika language
- NKU (disambiguation) : Kulango language
- : Nyika language
- : Nkutu language
- : Nkoroo language
- NKY : Khiamniungan language
- : Ibuoro language
- NLA : Ngombale language
- NLC : Nalca language
- NLD : Dutch language
- NLE : Luhya language
- NLG : Gela language
- NLI : Nangalami language
- NLJ : Nyali language
- : Yali language
- NLL : Nihali language
- NLN : Mexicanero language
- NLO : Ding language
- : Tangsa language
- NLR : Ngarla language
- NLU : Nchumbulu language
- NLV : Orizaba Nahuatl
- NLW : Walangama language
- : Nyamal language
- : Santa Cruz language
- NMA : Maram language
- NMB : Big Nambas language
- NMC : Ngam language
- NMD : Ndumu language
- NME (disambiguation) : Mzieme language
- : Tangkhul language
- NMG : Kwasio language
- nmh : Monsang language
- nmi : Nyam language
- : Ngombe language (Central African Republic)
- : Ndemli language
- NMM : Manang language
- NMN : Taa language
- NMO : Moyon language
- NMP : Nimanburru language
- : Kalanga language
- NMR (disambiguation) : Nimbari language
- NMS : Letemboi language
- NMT : Namonuito language
- NMU (disambiguation) : Maidu language
- : Ngamini language
- NMW : Nimoa language
- : Nambu language
- : Namuyi language
- : Losso language
- NNA : Nyangumarta language
- NNB : Nande language
- NNC : Nancere language
- : West Ambae language
- : Ovambo language
- NNF : Ngaing language
- NNG : Maring language (India)
- : Ngiemboon language
- NNI : Nuaulu language
- : Nyangatom language
- : Nankina language
- NNL : Ntenyi language
- NNM : Namia language
- NNN : Ngeté-Herdé language
- NNO : Nynorsk
- NNP : Wancho language
- : Ngindo language
- : Narangga language
- NNS : Ningye language
- NNT : Nanticoke language
- NNU : Dwang language
- NNV : Nukunu language
- NNW : Nuni language
- : Nagumi language
- : Kayardild language
- : Nda’nda’ language
- noa : Wounaan language
- NOB nob : Bokmål
- NOC : Nuk language
- NOD : Northern Thai language
- noe : Nimadi language
- NOF : Nomane language
- NOG : Nogai language
- NOH : Nomu language
- NOI : Bhilori language
- : Nonuya language
- NOK : Nooksack language
- NOL nol : Nomlaki language
- nom : Nocamán language
- : Nuu-chah-nulth language
- NOP (disambiguation) : Numanggang language
- : Yaka language (Congo–Angola)
- nor : Norwegian language
- NOS : Nisu language
- not : Nomatsiguenga language
- now : Nyambo language
- : Noy language
- noz : Nayi language
- NPA : Nar Phu language
- NPB (disambiguation) : Nupbi language
- NPH : Phom language
- NPI : Nepali language
- NPL : Tehuacan–Zongolica Nahuatl
- NPN : Mondropolon language
- NPO : Pochuri language
- NPS : Nipsan language
- : Badaic language
- : Ede language
- : Ede language
- : Ndom language
- : Nen language
- : N'Ko alphabet#The literary language
- : Tangsa language
- : Akyaung Ari language
- NRA : Kele language (Gabon)
- NRB : Nara language
- NRC : Noric language
- NRE : Rengma language
- NRG : Narango language
- NRI : Chokri language
- NRK (disambiguation) : Ngarla language
- NRL (disambiguation) : Ngarluma language
- NRN (disambiguation) : Norn language
- NRP : North Picene language
- : Khamyang language
- NRT : Northern Kalapuya language
- NRU : Naxi language
- : Ngurmbur language
- NRZ : Lala language (Papua New Guinea)
- NSA (disambiguation) : Sangtam language
- NSC : Wushi language
- NSD (disambiguation) : Nisu language
- NSE : Nsenga language
- NSF : Nisu language
- NSG : Ngasa language
- NSH : Ngoshie language
- NSI : Nigerian Sign Language
- NSK : Naskapi language
- NSM : Sema language
- NSN : Nehan language
- NSP : Nepali Sign Language
- : Northern Sierra Miwok
- NSR : Maritime Sign Language
- NSS : Nali language
- NST : Tangsa language
- NSU : Tehuacan–Zongolica Nahuatl
- NSV : Nisu language
- NSW (disambiguation) : Navut language
- NSX : Nsongo language
- NSY (disambiguation) : Nasal language
- NSZ : Nisenan language
- NTE : Nathembo language
- NTG : Wangkumara language
- NTI (disambiguation) : Natioro language
- : Ngaanyatjarra language
- NTK : Ikoma language
- NTM : Nateni language
- NTO : Ntomba-Bolia language
- NTP : Tepehuán language
- NTR : Delo language
- NTS : Natagaimas language
- NTU : Santa Cruz language
- : Nottoway language
- : Somra language
- : Mantsi language
- : Natanzi language
- : Yuanga language
- NUC : Nukuini language
- : Ngala language
- NUE : Central Banda language
- : Nusu language
- NUG : Nungali language
- nuh : Ndunda language
- NUI : Kombe language
- : Nyole language (Uganda)
- nuk : Nuu-chah-nulth language
- NUL : Nusa Laut language
- NUN nun (disambiguation): Nung language
- NUP : Nupe language
- nuq : Nukumanu language
- nur : Nukuria language
- NUS : Nuer language
- nut : Nung language (Tai)
- : Ngbundu language
- NUV nuv : Nuni language
- : Mehek language
- : Nunggubuyu language
- : Guerrero Nahuatl
- NVH : Nasarian language
- NVM : Namiae language
- : Nen language
- NWA : Nawathinehena language
- NWB : Nyabwa language
- NWC : Classical Nepal Bhasa
- : Ngayawung language
- NWI : Southwest Tanna language
- : Morokodo language
- NWO : Nauo language
- NWR : Nawaru language
- : Nepal Bhasa
- : Nottoway language
- : Nauete language
- : Ngando language
- : Li'o language
- : Ngadha language
- : Nindi language
- : Nyadu’ language
- : Nuaulu language
- : Numidian language
- : Ngawun language
- : Naxi language
- : Ninggerum language
- : Narau language
- : Nafri language
- : Nyangbo-Tafi language
- NYC (disambiguation) : Nyanga-li language
- nyd : Nyole language (Kenya)
- nye : Nyengo language
- : Mijikenda language
- : Shi language
- : Nyigina language
- : Nyimang language
- : Nyanga language
- NYK : Nyaneka language
- : Kuy language
- nym : Nyamwezi language
- : Nkore language
- NYO : Nyoro language
- NYP : Nyangia language
- : Nayini language
- : Nyiha language
- : Noongar language
- : Nyawaygi language
- : Nyungwe language
- : Nyulnyul language
- : Nyaw people
- NYX : Nganyaywana language
- : Nyakyusa language
- : Tigon language
- : Njebi language
- : Nzema language
- : Nzakara language
- : Zeme language
- NZS : New Zealand Sign Language
- : Central Teke language
- : Nzakambay language
- : Nanga Dogon
- OAA : Orok language
- OAC : Oroch language
- OAR : Old Aramaic language
- OAV : Avar language
- obi : Obispeño language
- : Bontoc language
- OBL : Oblo language
- OBM : Moab#Moabite language
- OBO : Obo language
- OBR : Old Burmese
- OBT : Breton language
- OCA : Ocaina language
- OCC : Occidental language
- : Old Chinese
- OCU : Matlatzinca language
- ODA : Odut language
- ODT : Old Dutch
- ODU odu : Odual language
- OFS : Old Frisian
- ofu : Efutop language
- : Ogbia language
- OGC : Ogba language
- OGE : Old Georgian language
- OGG : Ogbogolo language
- : Bengkulu language
- ogo : Khana language
- : Ogbronuagum language
- : Hittite language
- : History of the Hungarian language
- oia : Oirata language
- oin : One language
- : Northwestern Ojibwa
- OJC : Central Ojibwa language
- : Eastern Ojibwa language
- oji : Ojibwe language
- : Old Japanese
- : Ontong Java language
- OJW : Western Ojibwa language
- oka : Okanagan language
- : Okobo language
- : Okodia language
- : Koko-Bera language
- oki : Ogiek language
- OKJ : Oko-Juwoi language
- : One language
- : Old Kentish Sign Language
- : History of the Korean language#Middle Korean
- : Amami language
- : Old Korean
- : Kalabari language
- OKS : Oko language
- : Oku language
- : Orokaiva language
- : Okpe language (Northwestern Edo)
- OLA ola : Central Tibetan language
- old : Central Kilimanjaro language
- OLE : 'Ole language
- : Kunjen language
- olm (disambiguation): Oloma language
- OLO : Livvi-Karelian language
- : Olrat language
- OMA : Omaha–Ponca language
- OMB : East Ambae language
- OMC : Mochica language
- OMG : Omagua dialect
- : Omok language
- : Ombo language
- : Minoan language
- OMO omo : Utarmbung language
- OMP : Meitei language
- OMR : Marathi language
- OMT : Omotik language
- : Omurano language
- : Tairora language
- : Mon language
- ONB : Ong Be language
- : Oneida language
- ong : Olo language
- oni (disambiguation): Onin language
- ONJ : Onjob language
- : One language
- : Onobasulu language
- ono : Onondaga language
- ONP : Sartang language
- ONR : One language
- ONS : Ono language
- ONT : Ontenu language
- ONU : Unua language
- : Old Nubian language
- ONX : Onin language
- OOD : O'odham language
- : Ta’Oi language
- OON : Önge language
- : Oorlams Creole
- OOS : Scythian languages
- OPA : Okpamheri language
- OPE : Old Persian
- OPK : Kopka language
- OPM : Oksapmin language
- OPO : Opao language
- opt OPT (disambiguation) : Opata language
- : Ofayé language
- orc (disambiguation): Orma language
- ore (disambiguation): Orejón language
- ORG (disambiguation) : Oring language
- : Oroqen language
- ori : Oriya language
- ork : Orokaiva language
- om (disambiguation): Oromo language
- orn : Orang Kanaq language
- oro : Orokolo language
- orr : Oruma language
- ORS : Orang Seletar language
- ort : Oriya language
- oru : Ormuri language
- : Old East Slavic
- : Oro Win language
- : Oro language
- ORY : Oriya language
- orz : Ormu language
- osa : Osage language
- OSC : Oscan language
- OSI : Osing dialect
- oso : Ososo language
- OSP : Old Spanish language
- OST : Osatu language
- OSU : One language
- OTB : Old Tibetan
- OTD : Ot Danum language
- OTE (disambiguation) : Northwestern Otomi
- OTI oti : Oti language
- OTK : Old Turkic language
- OTL : Tilapa Otomi
- OTM : Sierra Otomi
- OTN : Sierra Otomi
- : Northwestern Otomi
- OTR : Otoro language
- OTS : San Felipe Otomi
- ott : Temoaya Otomi
- otu : Otuke language
- : Sierra Otomi
- : Tamil language#Old Tamil
- : Ixtenco Otomi
- OUA : Wargli language
- : Glio-Ubi language
- : Ounge language
- OUI : Old Turkic language
- OUM : Ouma language
- : Sekele language
- : Owiniga language
- owl (disambiguation): Old Welsh
- : Oi language
- : Oyda language
- : Wayampi language
- : Oya’oya language
- : Nzime language
- PAB : Paresi language
- PAC : Pacoh language
- pad : Paumarí language
- PAE : Pagibete language
- PAF (disambiguation) : Kagwahiva language
- PAH : Kagwahiva language
- pai : Pe language
- PAJ : Baniwa language
- pak : Akwáwa language
- pao : Northern Paiute language
- : Parya language
- par : Timbisha language
- PAS : Papasena language
- PAT : Papitalai language
- pav : Wari’ language
- paw (disambiguation): Pawnee language
- pax : Pankararú language
- pay : Paya language
- paz : Pankararú language
- PBB : Páez language
- PBC : Kapóng language
- PBE : Southern Popoloca language
- PBF : Coyotepec Popoloca language
- PBG : Paraujano language
- : Panare language
- PBI : Parkwa language
- PBL : Mak language (Adamawa)
- PBN : Kpasam language
- PBO : Papel language
- PBP : Badyara language
- PBR : Pangwa language
- PBS (disambiguation) : Pame language
- PBT : Pashto language
- PBU : Pashto language
- : Pnar language
- : Pyu language (Papuan)
- PBZ : Spurious languages
- PCA : Western Popoloca language
- PCB : Pear language
- PCC : Bouyei language
- PCE : Palaung language
- PCG : Paniya language
- PCH : Pardhan language
- PCI : Duruwa language
- PCJ : Gorum language
- PCK : Paite language
- PCL : Pardhi language
- PCM (disambiguation) : Nigerian Pidgin
- PCN : Piti language
- PCP : Pacahuara language
- PCR (disambiguation) : Amdo Tibetan language
- PCW : Pyapun language
- PDA (disambiguation) : Anam language
- PDN : Podena language
- PDO : Padoe language
- PDU : Padaung language
- PEA : Malay trade and creole languages#Baba Malay
- PEC pec : Lampung language
- PED : Mala language
- pee : Taje language
- PEF : Northeastern Pomo language
- PEG : Pengo language
- : Bonan language
- pei : Chichimeca Jonaz language
- : Northern Pomo language
- PEK pek : Penchal language
- pel : Pekal language
- PEM : Pende language
- PEN pen (disambiguation): Musi language
- PEP pep : Kunja language (Papuan)
- : Southern Pomo language
- PES : Western Persian
- PEV : Mapoyo-Yabarana language
- PEX (disambiguation) : Petats language
- : Petjo language
- pez (disambiguation): Penan-Nibong language
- PFA pfa : Pááfang language
- PFE : Kutin language
- PGI : Pagi language
- PGK : Rerep language
- PGL : Primitive Irish
- PGN : Paeligni#Language
- PGS : Pangseng language
- : Pagu language
- : Saam language
- PHA : Pa-Hng language
- PHD : Phudagi language
- : Phuong language
- : Phukha language
- PHK : Tai Phake language
- PHL (disambiguation) : Palula language
- PHM : Nsenga language
- : Phoenician language
- PHO : Phunoi language
- PHQ : Phana’ language
- PHR : Pothohari dialect
- PHT : Phu Thai language
- phu : Phuan language
- : Persian language
- pia : Pima Bajo language
- PIB : Piro language (Peru)
- PIC : Pinji language
- PID : Piaroa language
- pie (disambiguation): Piro Pueblo language
- PIF : Pingelapese language
- PII : Western Desert language
- PIL : Yom language
- PIM : Powhatan language
- PIN : Piame language
- pio : Piapoco language
- pip : Pero language
- pir : Wanano language
- pit : Pitta Pitta language
- PIU : Pintupi language
- PIW : Pimbwe language
- PIX pix : Piu language
- : Piya language
- piz : Pije language
- : Pitjantjatjara language
- PKA : Jain Prakrit
- PKB : Pokomo language
- PKC : Baekje language
- PKG : Pak-Tong language
- : Pangkhu language
- PKN : Pakanha language
- : Pökoot language
- PKP (disambiguation) : Pukapukan language
- PKS : Indo-Pakistani Sign Language
- PKT (disambiguation) : Maleng language
- PKU (disambiguation) : S'gaw Karen language
- PLA : Maiani language
- PLB (disambiguation) : Polonombauk language
- PLC : Palawano language
- PLE : Palu'e language
- PLG : Pilagá language
- PLH : Paulohi language
- PLI : Pali
- pi (disambiguation): Pali
- : Polci language
- PLK : Shina language
- PLL (disambiguation) : Palaung language
- PLM : Musi language
- PLN : Palenquero
- PLO (disambiguation) : Oluta Popoluca
- PLP : Palpa language
- : Palaic language
- PLR : Palaka language
- PLS : Northern Popoloca language
- PLT : Malagasy language
- PLU : Palikúr language
- : Palawano language
- : Palawano language
- ply : Bolyu language
- plz : Paluan language
- PMA : Paamese language
- PMB : Pambia language
- PMC : Palumata language
- PMD : Pallanganmiddang language
- PME : Pwaamei language
- PMF : Pamona language
- PMH : Maharashtri Prakrit
- PMI : Pumi language
- : Pumi language
- PMK : Carolina Algonquian language
- PML : Mediterranean Lingua Franca
- PMM : Pol language
- PMN : Pam language
- PMO : Pom language
- : Pame language
- PMR : Paynamar language
- PMT : Tuamotuan language
- PMU : Mirpur Punjabi
- PMW (disambiguation) : Plains Miwok language
- PMX : Sopvoma language
- : Malay trade and creole languages#Papuan/Irian Malay
- : Pame language
- PNA : Bah-Biau Punan language
- PNC : Pannei language
- PNE : Penan-Nibong language
- PNG : Pongu language
- PNH : Penrhyn language
- PNI : Aoheng language
- : Noongar language
- : Pauna language
- PNM : Punan Batu language
- PNN : Hagahai language
- : Panobo language
- PNP : Pancana language
- : Pana language (Gur)
- PNR (disambiguation) : Panim language
- PNS : Ponosakan language
- PNU : Kiong Nai language
- PNV : Dhalandji language
- PNW : Panyjima language
- : Pinyin language
- : Pana language
- POA : Poqomam language
- POB : Poqomchi' language
- POC : Poqomam language
- poe (disambiguation): Southern Popoloca language
- POF : Poke language
- POG : Potiguára language
- POH : Poqomchi' language
- : Pokomo language
- POK pok (disambiguation): Tuyuca language
- pom : Southeastern Pomo language
- poo : Central Pomo language
- pop : Pwapwâ language
- : Texistepec Popoluca
- POR por : Portuguese language
- pot (disambiguation): Potawatomi language
- POU : Poqomam language
- POV : Guinea-Bissau Creole
- POW (disambiguation) : Western Popoloca language
- pox : Polabian language
- : Pogolo language
- PPA : Pao language
- PPE : Papi language
- PPI : Paipai language
- PPK : Uma language
- PPL : Pipil language
- PPM : Papuma language
- PPN : Papapana language
- PPO : Folopa language
- PPP : Yaka language (Congo–Angola)
- PPQ : Pei language
- PPR : Luhu language
- PPS : Northern Popoloca language
- PPT : Pare language
- PPU : Papora-Hoanya language
- PPV : Spurious languages
- : Pa'a language
- : Malecite-Passamaquoddy language
- PRB : Lua’ language
- PRC (disambiguation) : Parachi language
- PRD : Spurious languages
- pre : Principense language
- PRF : Paranan language
- PRG : Old Prussian language
- PRH : Porohanon language
- PRI : Paicî language
- PRK : Wa language
- PRL : Peruvian Sign Language
- PRM : Porome language
- PRN : Wasi-wari language
- PRO : Old Occitan
- PRP : Spurious languages
- PRQ (disambiguation) : Perené Ashéninka
- PRR : Purí language
- PRS : Persian language
- PRT : Phai language
- pru : Puragi language
- PRV : Provençal dialect
- : Parawen language
- PRX : Burig
- pry PRY (disambiguation) : Phray language
- PSA : Pisa language
- PSC : Persian Sign Language
- PSE : Bengkulu language
- PSG : Penang Sign Language
- PSH : Pashayi language
- psi : Pashayi language
- PSL : Puerto Rican Sign Language
- PSM : Pauserna language
- PSN (disambiguation) : Panasuan language
- PSO : Polish Sign Language
- : Pasi language
- PSS : Kaulong language
- PST : Central Pashto
- PSU : Shauraseni language
- PSW : Port Sandwich language
- PTA : Pai Tavytera language
- PTH : Pataxó language
- PTI : Western Desert language
- PTN : Patani language
- PTO : Zo'é language
- PTP : Mumeng language
- PTR : Piamatsina language
- PTT : Enrekang language
- PTU : Bambam language
- PTV : Port Vato language
- PTW : Pentlatch language
- PUA : Purépecha language
- pub (disambiguation): Kharam language
- PUC : Punan Merap language
- PUD pud : Aput language
- PUF (disambiguation) : Punan Merah language
- pug (disambiguation): Puguli language
- PUI : Puinave language
- PUJ : Punan Tubu language
- : Puma language
- pun (disambiguation): Lampung language
- : Ksingmul language
- PUP pup : Pulabu language
- : Puquina language
- pur : Purubora language
- puu : Punu language
- : Puluwatese language
- : Puari language
- : Purisimeño language
- PUZ : Kharam language
- PWA : Pawaia language
- PWB : Jere language
- PWG : Gapapaiwa language
- PWI (disambiguation) : Patwin language
- PWM : Molbog language
- PWN : Paiwan language
- : Western Pwo language
- PWR : Bagheli language
- : Northern Pwo language
- : Midland Mixe
- pye : Krumen language
- pym : Fyam language
- : Poyanáwa language
- : Paraguayan Sign Language
- pyu (disambiguation): Puyuma language
- : Pyu language (Burma)
- : Pyen language
- qaa (disambiguation): ISO 639-3#Non-language codes
- : Quapaw
- : Huánuco Quechua
- : K’iche’ language
- qud : Kichwa language
- que : Quechua languages
- : Lambayeque Quechua
- : Kichwa language
- : South Bolivian Quechua
- QUI : Quileute language
- : K’iche’ language
- : Lowland Peruvian Quechua
- : North Bolivian Quechua
- qum (disambiguation): Sipakapa language
- : Quinault people
- : Kichwa language
- : Quinqui jargon
- : Yaru Quechua
- : Santiagueño Quechua
- : K’iche’ language
- : K’iche’ language
- : Sakapultek language
- : Kichwa language
- : Yauyos–Chincha Quechua
- : Ayacucho Quechua
- : Cusco Quechua
- : Yaru Quechua
- : Cajamarca Quechua
- QVE : Cusco Quechua
- : Ancash Quechua
- : Kichwa language
- : Kichwa language
- : Huánuco Quechua
- : Huánuco Quechua
- : Yaru Quechua
- : Kichwa language
- : Pacaraos Quechua
- : Lowland Peruvian Quechua
- : Wanka Quechua
- : Choyo language
- : Kichwa language
- : Ancash Quechua
- : Southern Quechua
- : Ancash Quechua
- : Cuman language
- : Ancash Quechua
- : Kwalhioqua-Clatskanie language
- : Huánuco Quechua
- : Yauyos–Chincha Quechua
- : Huánuco Quechua
- : K’iche’ language
- : Kichwa language
- : Ancash Quechua
- : Ancash Quechua
- : Puno Quechua
- : Qashqai language
- : Kichwa language
- : Southern Qiang language
- : Yaru Quechua
- : Ayacucho Quechua
- : Wanka Quechua
- : Quenya
- : Quiripi language
- RAA : Dungmali language
- RAB rab (disambiguation): Camling language
- RAC : Rasawa language
- RAD : Rade language
- RAE rae : Lampung language
- RAF (disambiguation) : Meohang language
- RAG rag : Logoli language
- RAH : Rabha language
- rai : Ramoaaina language
- RAK : Tulu-Bohuai language
- RAL : Ralte language
- ram : Canela language
- RAN ran : Riantana language
- RAP : Rapa Nui language
- : Saam language
- RAS : Tegali language
- RAU rau (disambiguation): Raute language
- RAV (disambiguation) : Sampang language
- raw : Rawang language
- : Rang language
- ray : Rapa language
- raz : Rahambuu language
- : Palaung language
- RBK : Bontoc language
- RBL : Albay Bikol language
- : Barababaraba language
- RCF : Réunion Creole
- RDB : Tati language (Iran)
- rea : Rerau language
- reb : Rembong language
- ree : Kayan language (Borneo)
- REG reg : Kara language (Tanzania)
- : Rejang language
- rel REL (disambiguation) : Rendille language
- ren : Rengao language
- RER (disambiguation) : Rer Bare people
- res : Reshe language
- RET : Retta language
- rey : Reyesano language
- RGA : Roria language
- RGE : Romano-Greek language
- : Rangas language
- rgn : Romagnol language
- RGR : Resígaro language
- RGS : Roglai language
- : Ringgou language
- : Rohingya language
- RHP : Yahang language
- RIA : Kokborok
- RIF : Riffian language
- RIL : Riang language
- rim : Turu language
- RIN rin : Nungu language
- RIR : Ribun language
- RIT (disambiguation) : Ritharngu language
- : Riung language
- : Rangpuri language
- : Rajong language
- : Raji language
- : Rangpuri language
- : Mnong language
- : Rakahanga-Manihiki language
- : Arakanese language
- RKT : Rangpuri language
- : Bandjalang language
- RMA : Rama language
- RMB (disambiguation) : Rembarunga language
- RMC : Carpathian Romani
- RME : Angloromani language
- RMF : Finnish Kalo language
- RMG : Rodi language
- RMH : Murkim language
- RMI : Lomavren language
- : Romkun language
- RML : Baltic Romani
- rmm : Romang language
- RMN : Balkan Romani
- RMO : Sinte Romani
- RMP : Rempi language
- : Caló language
- RMR : Caló language
- RMS : Romanian Sign Language
- RMT : Domari language
- : Scandoromani language
- RMV : Codes for constructed languages#Romanova
- : Welsh-Romani language
- RMX : Kaco’ language
- : Vlax Romani language
- : Arakanese language
- RNA (disambiguation) : Runa language
- RND rnd : Ruund language
- rng : Ronga language
- : Ranglong language
- RNN : Roon language
- RNP : Rongpo language
- RNR (disambiguation) : Wemba Wemba language
- : Rungwa language
- rob : Tae’ language
- roc : Roglai language
- rod : Rogo language
- ROE roe (disambiguation): Ronji language
- ROF : Rombo language
- rog (disambiguation): Roglai language
- ROL : Romblomanon language
- RON ron : Romanian language
- ROR : Rongga language
- rou : Aiki language
- row : Dela-Oenale language
- RPN : Repanbitip language
- RRI : Ririo language
- RRO (disambiguation) : Waima language
- RRT : Arritinngithigh language
- RSB : Romano-Serbian language
- RSI : Rennellese Sign Language
- : Ratahan language
- RTM : Rotuman language
- RTW : Bhilali language
- rub : Gungu language
- RUC : Ruuli language
- RUF : Luguru language
- rug : Roviana language
- RUH ruh (disambiguation): Ruga language
- RUI rui : Rufiji language
- ruk : Ce language
- RN : Kirundi
- : Aromanian language
- : Megleno-Romanian language
- rus : Russian language
- RUT rut : Rutul language
- : Kinabatangan language
- ruy : Mala language (Nigeria)
- : Ruma language
- RWA : Rawo language
- : West Kilimanjaro language
- : Amba language (Bantu)
- : Rawa language
- RWR (disambiguation) : Marwari language
- RWS : Musi language
- : Ngardi language
- : Mithaka language
- RYN (disambiguation) ryn (disambiguation): Amami language
- : Yaeyama language
- ryu : Okinawan language
- SAA saa (disambiguation): Saba language
- SAB : Buglere language
- SAE : Sabanês language
- SAF : Safaliba language
- SAK : Sake language
- sam : Samaritan Aramaic language
- SAN : Sanskrit
- SAO : Sause language
- SAP sap (disambiguation): Sanapaná language
- SAQ : Samburu language
- SAR : Saraveca language
- SAS : Sasak language
- SAU sau : Saleman language
- SAV : Safen language
- saw (disambiguation): Sawi language
- sax : Saa language
- say : Saya language
- SBA : Ngambay language
- SBB : Simbo language
- SBC : Kele language (New Guinea)
- SBD : Samo language (Burkina)
- SBE : Saliba language (South America)
- SBF : Shabo language
- SBG (disambiguation) : Seget language
- SBH : Sori-Harengan language
- SBI : Seti language
- SBJ : Surbakhal language
- SBK : Safwa language
- SBL : Botolan language
- SBM : Sagara language
- SBN : Sindhi language
- SBO : Sabüm language
- SBQ : Sileibi language
- SBR : Sembakung language
- SBS : Kuhane language
- SBT : Kimki language
- SBU : Lahuli-Spiti language
- SBW : Simba language
- : Seberuang language
- SBY : Soli language
- : Kaba language
- SCA : Hlersu language
- SCB : Chut language
- SCC : Serbian language
- SCE : Santa language
- SCF : Saint Lucian Creole French
- SCG : Sanggau language
- SCH : Khelma language
- SCI : Sri Lankan Creole Malay
- SCK : Sadri language
- SCL : Shina language
- SCP : Kyirong-Kagate language
- : Sa'och language
- SCR : Croatian language
- SCS : Slavey language
- SCU : Kinnauri language
- SCV : Ziriya language
- SCW : Sha language
- SCX : Sicels#Language
- SDA : Toraja-Sa’dan language
- SDB : Shabaki language
- SDD : Bengkulu language
- SDE : Surubu language
- SDF : Sarli language
- SDG : Savi language
- SDH : Southern Kurdish
- SDI : Col language
- SDJ : Suundi language
- SDL : Saudi Sign Language
- SDM : Semandang language
- SDN : Gallurese dialect
- SDO : Bukar Sadong language
- SDP : Sherdukpen language
- SDR : Sadri language
- SDT : Shuadit language
- SDU : Sarudu language
- SDX : Melanau language
- SDZ : Sallaans dialect
- SEA : Semai language
- seb : Shempire language
- SEC : Sechelt language
- sed (disambiguation): Sedang language
- see : Seneca language
- SEF : Cebaara language
- SEG : Mijikenda language
- SEH : Sena language
- : Sene language
- SEK : Sekani language
- SEL sel (disambiguation): Selkup language
- SEN sen : Nanerigé language
- SEO (disambiguation) : Suarmin language
- SEP : Sucite language
- SEQ : Senara language
- ser : Serrano language
- set : Sentani language
- SEU : Serui-Laut language
- SEV : Nyarafolo language
- : Sewa Bay language
- : Secoya language
- SEZ : Senthang language
- SFB : Belgian Sign Language
- SFE : Subanon language
- SFM : Small Flowery Miao
- SFS : South African Sign Language
- SFW : Sehwi language
- SGB : Mag-antsi language
- SGC : Kipsigis language
- SGD (disambiguation) : Surigaonon language
- SGE : Segai language
- SGG : Swiss-German Sign Language
- SGH : Shughni language
- SGI : Nizaa language
- : Chhattisgarhi language
- : Sangkong language
- SGM : Singa language
- SGR : Sangsari language
- SGT : Brokpa language
- SGU : Salas language
- : Sebat Bet Gurage language
- : Sanglechi language
- : Sursurunga language
- sha (disambiguation): Shall-Zwall language
- SHB : Ninam language
- SHC : Sonde language
- she (disambiguation): Sheko language
- SHG : Shua language
- SHH : Shoshoni language
- : Shatt language
- SHK : Shilluk language
- SHL : Shö language
- SHN : Shan language
- sho : Shanga language
- : Ila language
- SHR : Shi language
- SHS : Shuswap language
- SHT : Shasta language
- shu : Chadian Arabic
- SHV : Shehri language
- : Shwai language
- : She language
- shy (disambiguation): Shawiya language
- : Syenara language
- sia : Akkala Sami language
- SIB : Sebop language
- SIC : Sos Kundi language
- SID sid : Sidamo language
- SIE sie : Simaa language
- sig : Paasaal language
- : Zire language
- SII : Shompen language
- sij : Numbami language
- : Sikiana language
- SIL : Sisaala language
- sim : Seim language
- SIP : Sikkimese language
- : Sonia language
- sir (disambiguation): Siri language
- sis : Siuslaw language
- SIU : Sinagen language
- SIV : Sumariup language
- : Siwai language
- : Sumau language
- : Sivandi language
- : Siwa language
- SJA : Eperara language
- SJD : Kildin Sami language
- : Pite Sami language
- : Sungor language
- SJK : Kemi Sami language
- : Miji language
- SJM : Bajaw language
- : Sindarin
- : Xibe language
- SJP : Surajpuri language
- SJR : Siar-Lak language
- SJS : Senhaja language
- SJT : Ter Sami language
- sju SJU (disambiguation) : Ume Sami language
- SKA : Lushootseed language
- SKB : Saek language
- SKC : Ma Manda language
- SKD : Southern Sierra Miwok language
- : Sakirabiá language
- SKG : Malagasy language
- ski (disambiguation): Sika language
- SKK : Oi language
- SKL : Kendayan language
- SKM : Kutong language
- : Subanon language
- : Seko language
- SKP : Sekapan language
- : Sininkere language
- : Saraiki dialect
- SKS (disambiguation) : Maia language
- skt : Sakata language
- SKU : Sakao language
- : Skou language
- SKW : Skepi Creole Dutch
- SKX : Seko language
- sky (disambiguation): Sikaiana language
- : Sekar language
- SLB : Saluan language
- SLC : Saliba language (South America)
- SLD : Sisaala language
- SLE : Sholaga language
- SLF : Italian Sign Language
- SLG : Selungai Murut language
- : Lushootseed language
- SLI : Silesian German
- SLJ : Salumá language
- SLK : Slovak language
- : Salt-Yui language
- SLM : Pangutaran Sama language
- SLN : Salinan language
- SLP : Lamaholot language
- SLQ : Salchuq language
- SLR : Salar language
- SLS : Sign language in Singapore
- SLT : Sila language (Laos)
- SLU : Selaru language
- : Sialum language
- SLX : Salampasu language
- sly : Selayar language
- : Ma'ya language
- SMA : Southern Sami language
- SMB : Simbari language
- SMC : Som language
- SMD : Sama language (Angola)
- SME : Northern Sami language
- SMF : Auwe language
- SMG : Simbali language
- SMH : Samei language
- : Lule Sami language
- SMK (disambiguation) : Bolinao language
- SML : Sama language
- SMN : Inari Sami language
- SMP : Samaritan Aramaic language
- : Samo language (New Guinea)
- SMR : Simeulue language
- SMT : Simte language
- SMU : Somray language
- SMV (disambiguation) : Kadodi language
- SMW : Sumbawa language
- SMX : Holu language
- : Semnani language
- SNA : Shona language
- SNB : Sebuyau language
- SNC : Sinaugoro language
- SNE : Jagoi language
- SNF snf : Noon language
- SNG : Sanga language (Bantu)
- : Chácobo language
- SNI : Sensi language
- SNJ : Sango language
- SNL (disambiguation) : Sangirese language
- SNM : Lugbara language
- SNN : Siona language
- sno : Lushootseed language
- SNP : Siane language
- : Sangu language (Gabon)
- SNR : Sihan language
- SNS : Nahavaq language
- SNU : Viid language
- SNV : Sa'ban language
- SNW : Santrokofi language
- : Sam language
- SNY : Sanio language
- : Sinsauru language
- SOA soa : Thai Song language
- SOB : Sobei language
- SOC : Soko language
- sod (disambiguation): Songola language
- SOE soe : Hendo language
- SOG sog : Sogdian language
- SOH : Aka language
- SOJ : Soi language
- sok : Sokoro language
- sol : Solos language
- som : Somali language
- soo : Yansi language
- SOP : Songe language
- : Kanasi language
- sor : Somrai language
- SOS (disambiguation) : Sembla language
- SOU sou : Southern Thai language
- SOV : Sonsorolese language
- sow : Sowanda language
- sox : Swo language
- soy (disambiguation): Miyobe language
- SPA spa (disambiguation): Spanish language
- SPB : Sepa-Teluti language
- SPC : Sapé language
- SPD (disambiguation) : Saep language
- SPE : Sepa language (Papua New Guinea)
- SPG : Sian language
- SPI : Saponi language
- SPK : Sengo language
- SPL : Selepet language
- SPM : Akukem language
- SPO : Montana Salish language
- SPP : Supyire language
- SPQ : Amazonic Spanish
- SPR : Saparua language
- SPS : Saposa language
- SPT : Lahuli-Spiti language
- SPU : Sapuan language
- SPV : Kosli language
- SPX : South Picene language
- SPY spy (disambiguation): Sabaot language
- SQA : Shama language
- : Shau language
- : Albanian language
- : Albanian Sign Language
- SQM : Gbeya language
- SQN : Susquehannock language
- : Sorkhei language
- : Laven language
- : Sicilian Arabic
- SQS : Sri Lankan sign languages
- : Soqotri language
- : Squamish language
- SRA : Saruga language
- SRB : Sora language
- SRC : Logudorese dialect
- SRE : Sara language (Indonesia)
- SRF : Nafi language
- SRG : Sulod language
- SRH : Sarikoli language
- SRI : Siriano language
- : Bengkulu language
- SRK : Serudung language
- SRL : Isirawa language
- SRM : Saramaccan language
- SRO : Sardinian language
- SRP : Serbian language
- SRR : Serer language
- SRS : Sarcee language
- SRT : Sauri language
- SRU : Surui language
- SRV : Sorsoganon language
- SRW : Serua language
- SRX : Sirmauri language
- SRY (disambiguation) : Sera language
- : Mazanderani language
- SSB : Sama language
- SSC : Suba-Simbiti language
- SSD (disambiguation) : Siroi language
- SSE : Sama language
- SSF : Thao language
- SSH : Shihhi Arabic
- SSI : Sansi language
- SSJ : Sausi language
- SSK : Sunam language
- SSL : Sisaala language
- SSM : Semnam language
- SSN : Waata language
- SSO : Sissano language
- SSP : Spanish Sign Language
- SSQ : So’a language
- SSR : French Sign Language
- SSS : Bru language
- SST : Sinasina language
- SSU : Susuami language
- SSV : Shark Bay language
- SSX (disambiguation) : Samberigi language
- : Saho language
- SSZ : Sengseng language
- STA : Settler Swahili
- STB : Subanon language
- STC : Santa Cruz language
- STD : Sentinelese language
- STE : Liana language
- STF : Seta language
- STG : Tariang language
- sth : Shelta
- STI : Stieng language
- STJ : Samo language (Burkina)
- STK : Arammba language
- STL : Stellingwarfs dialect
- STM : Setaman language
- STN : Owa language
- STP : Tepehuán language
- STR : North Straits Salish language
- STS (disambiguation) : Shumashti language
- STT : Stieng language
- STU (disambiguation) : Blang language
- STV : Silt'e language
- STW (disambiguation) : Satawalese language
- SUA sua : Sulka language
- sub : Suku language
- SUC : Subanon language
- sue : Suena language
- SUF : Tarpia language
- : Suba language
- sui : Suki language
- : Shubi language
- suk : Sukuma language
- sun (disambiguation): Sundanese language
- : Suri language
- SUR : Mwaghavul language
- SUS : Susu language
- SUT : Subtiaba language
- : Lampung language
- SUV (disambiguation) : Puroik language
- : Sumbwa language
- : Suyá language
- : Sunwar language
- SVA : Svan language
- SVB : Ulau-Suain language
- SVC : Vincentian Creole
- SVE : Serili language
- SVK (disambiguation) : Slovak Sign Language
- SVM : Slavomolisano language
- SVR : Savara language (Dravidian)
- SVS : Savosavo language
- SVX : Skalvians
- SWB : Comorian language
- SWC : Swahili language
- SWF (disambiguation) : Sere language
- : Swahili language
- SWI : Sui language
- : Shira language
- SWK : Sena language
- SWL : Swedish Sign Language
- SWM : Samosa language
- swn : Sokna language
- SWO : Yaminawa language
- SWP : Suau language
- : Sharwa language
- SWR : Saweru language
- SWS : Seluwasan language
- SWT : Sawila language
- SWU : Suwawa language
- SWV (disambiguation) : Shekhawati language
- : Sowa language
- : Zuruahá language
- : Sarua language
- : Suba language
- sxc : Sicani#Language
- : Sighu language
- : Shixing language
- : Yoncalla language
- SXM : Samre language
- : Sangirese language
- : Sorothaptic language
- : Saaroa language
- : Sasaru language
- SXU : Upper Saxon German
- : Saxwe language
- SYA : Siang language
- SYB : Subanon language
- SYC : Syriac language
- : Seki language
- : Sukur language
- SYL : Sylheti language
- sym : Samo language (Burkina)
- SYN : Senaya language
- : Suoy language
- SYR syr : Syriac language
- : Sinyar language
- : Kyirong-Kagate language
- : Al-Sayyid Bedouin Sign Language
- SZA : Semelai language
- : Ngalum language
- : Semaq Beri language
- SZD : Seru language
- SZE : Seze language
- : Sengele language
- : Ikizu language
- : Sula language
- SZP : Suabo language
- : Suwu language
- : Sawai language
- TAA (disambiguation) : Lower Tanana language
- TAB tab : Tabasaran language
- TAC : Tarahumara language
- tad : Tause language
- TAE : Tariana language
- TAF : Tapirapé language
- tag : Tagoi language
- taj : Tamang language
- tak : Tala language
- TAL : Tal language
- tan : Tangale language
- tap : Tabwa language
- taq : Tamasheq language
- tar (disambiguation): Tarahumara language
- tat : Tatar language
- tau (disambiguation): Lower Tanana language
- tav : Tatuyo language
- taw (disambiguation): Tai languages
- : Tamki language
- tay : Atayal language
- taz : Tocho language
- TBA (disambiguation) : Aikanã language
- TBB : Spurious languages
- TBC (disambiguation) : Takia language
- TBD (disambiguation) : Kaki Ae language
- TBE : Tanimbili language
- TBF : Mandara language
- : Tairora language
- TBI : Ingessana language
- TBJ : Tiang language
- TBK : Calamian Tagbanwa language
- TBL : Tboli language
- TBM : Tagbo language
- TBN : U'wa language
- TBO : Tawala language
- TBP : Taworta language
- TBR : Tumtum language
- TBS : Tanguat language
- TBT : Tembo (Kitembo) language
- TBU : Tubar language
- : Tobo language
- : Aborlan Tagbanwa language
- : Kapin language
- : Tabaru language
- TBZ : Tammari language
- TCA : Ticuna language
- TCB : Tanacross language
- TCC : Datooga language
- TCD : Nyangbo-Tafi language
- TCE : Tutchone language
- TCF : Tlapanec language
- TCG : Tamagario language
- TCH : Turks and Caicos Creole
- TCI : Wára language
- TCK : Tsege language
- TCL : Sak language
- TCM : Sumeri language
- TCN (disambiguation) : Central Tibetan language
- TCO : Tavoyan dialects
- TCP : Tawr language
- : Kaiy language
- TCS : Torres Strait Creole
- TCT : Then language
- TCU : Tarahumara language
- TCW : Tecpatlán Totonac
- TCX : Toda language
- : Tulu language
- : Thado language
- TDA : Gadal language
- TDB : Kurmali language
- TDC : Chami language
- TDD : Tai Nüa language
- TDE : Duleri Dogon
- TDF : Tariang language
- TDG : Tamang language
- TDH : Thulung language
- TDI : Tomadino language
- : Tajio language
- TDK (disambiguation) : Tambas language
- TDL : Sur language
- TDN : Tondano language
- TDO : Teme language
- : Tita language
- TDR : Todrah language
- TDS : Doutai language
- TDT : Tetum language
- TDU : Dusun language
- : Toro language
- TDX (disambiguation) : Malagasy language
- : Tadyawan language
- tea (disambiguation): Temiar language
- TEB : Teteté language
- TEC : Terik language
- TED ted : Krumen language
- tee (disambiguation): Huehuetla Tepehua
- tef : Teressa language
- TEG : North Teke language
- teh (disambiguation): Tehuelche language
- TEI : Torricelli language
- TEK : East Teke language
- tem : Temne language
- : Tama language (Colombia)
- teo : Teso language
- TEP : Tepecano language
- ter : Terêna language
- TES : Javanese language
- TEU : Tepes language
- TEV : Teor-Kur language
- tew : Tewa language
- tex : Tennet language
- tey (disambiguation): Tulishi language
- TFI : Tofin language
- TFN : Dena'ina language
- TFR : Teribe language
- TFT : Ternate language
- TGA : Taita language
- TGB : Momogun language
- TGC : Tigak language
- : Ciwogai language
- : Tamang language
- TGF : Chali language
- TGG : Tangga language
- TGH : Tobagonian Creole
- TGI : Lawunuia language
- : Nishi language
- : Tajik language
- TGN : Surigaonon language
- TGO : Tagula language
- TGP : Tangoa language
- : Tring language
- : Pacoh language
- TGS : Nume language
- TGT tgt : Central Tagbanwa language
- TGU : Tanggu language
- TGV (disambiguation) : Tingui-Botó language
- : Senufo languages
- : Tagish language
- TGY : Togoyo language
- TGZ (disambiguation) : Tagalaka language
- THA : Thai language
- THC (disambiguation) : Tai Hang Tong language
- THD : Kuuk Thaayorre language
- THE the (disambiguation): Tharu languages
- THF (disambiguation) : Thangmi language
- : Tarahumara language
- THK : Meru language
- THL : Tharu languages
- THM : Thavung language
- THP : Thompson language
- THQ (disambiguation) : Tharu languages
- thr : Tharu languages
- THS : Thakali language
- THT (disambiguation) : Tahltan language
- thu : Thuri language
- THV : Tamahaq language
- THX (disambiguation) : Oi language
- thy : Tha language
- : Air Tamajeq language
- TIA : Tidikelt language
- tic (disambiguation): Tiro language
- TID : Nonukan Tidong language
- tie : Tegali language
- TIF (disambiguation) : Tifal language
- tig : Tigre language
- TIH : Timugon language
- : Tiene language
- tik (disambiguation): Tikar language
- til : Tillamook language
- TIM : Timbe language
- TIN tin (disambiguation): Tindi language
- TIO tio : Teop language
- tip : Trimuris language
- : Tyefo language
- TIS : Itneg language
- tit : Tinigua language
- tiu : Isnag language
- : Tiwi language
- : Southern Tiwa language
- : Tiruray language
- : Tai Hongjin language
- : Tajuasohn language
- : Tunjung language
- : Tujia language
- : Tai Laing language
- TJM (disambiguation) : Timucua language
- : Tonjon language
- TJO : Tugurt language
- : Tujia language
- : Jurruru language
- : Djabwurrung language
- TKA (disambiguation) : Truká language
- TKB : Tharu languages
- : Tocodede language
- TKE : Makhuwa language
- : Kagwahiva language
- : Malagasy language
- TKK (disambiguation) : Tawang language
- TKL : Tokelauan language
- TKM : Takelma language
- : Amami language
- : Tikopia language
- : Tee language
- TKR : Tsakhur language
- TKS (disambiguation) : Tati language (Iran)
- : Tharu languages
- : Upper Necaxa Totonac
- TKW : Teanu language
- : Tangko language
- TKZ : Takua language
- TLA : Tepehuán language
- TLB : Tobelo language
- TLC : Misantla Totonac
- TLD (disambiguation) : Talaud language
- TLE : Markweta language
- TLG : Tofanma language
- TLI : Tlingit language
- TLJ : Talinga language
- TLK : Kulisusu language
- TLL : Tetela language
- TLM : Tolomako language
- TLN : Talondo’ language
- TLO (disambiguation) : Talodi language
- TLP : Filomeno Mata Totonac
- : Tai Loi language
- TLR : Talise language
- TLS : Tambotalo language
- : Sepa-Teluti language
- TLU : Tulehu language
- TLV : Taliabo language
- : Wemale language
- : Khehek language
- : Talysh language
- TLZ : Tae’ language
- TMA : Tama language
- TMB : Katbol language
- TMC : Tumak language
- TMD : Haruai language
- TME : Tremembé language
- TMF : Maskoy language
- TMG : Portugis language
- : Tuareg languages
- TMI : Tutuba language
- : Samarokena language
- TMK (disambiguation) : Tamang language
- TML : Asmat language
- TMN : Taman language
- TMO (disambiguation) : Temoq language
- TMP : Tai Mène language
- TMQ : Tumleo language
- TMS : Tima language
- TMT : Tasmate language
- TMU : Iau language
- TMV : Budza language
- : Temuan language
- TMX : Yamphu language
- TMY : Tami language
- TMZ : Tamanaku language
- TNA : Tacana language
- TNB : U'wa language
- TNC : Tanimuca-Retuarã language
- TND (disambiguation) : U'wa language
- TNE : Kallahan language
- : Persian language
- TNG : Tobanga language
- TNH : Maiani language
- TNI : Tandia language
- : Kanowit language
- TNK : Kwamera language
- TNL (disambiguation) : Lenakel language
- TNM : Tabla language
- TNN : North Tanna language
- TNO : Toromono language
- TNP : Whitesands language
- : Taíno language
- TNR : Bedik language
- TNS : Tenis language
- TNT (disambiguation) : Tontemboan language
- : Chakma language
- TNW : Tonsawang language
- : Tanema language
- : Tongwe language
- : Mos language
- TOB : Toba Qom language
- TOC : Sierra Totonac language
- tod : Loma language
- TOF : Gizrra language
- tog : Tonga (Nyasa) language
- toh : Tonga language (Mozambique)
- : Tojolab'al language
- TOL tol : Tolowa language
- tom : Tombulu language
- ton (disambiguation): Tongan language
- TO : Tongan language
- too : Xicotepec Totonac
- TOP top (disambiguation): Papantla Totonac
- : Toposa language
- tor : Central Banda language
- TOS : Sierra Totonac language
- TOT tot : Upper Necaxa Totonac
- : Cuoi language
- tov : Tati language (Iran)
- : Tobian language
- toy (disambiguation): Topoiyo language
- TOZ : To language
- TPA : Taupota language
- TPC : Tlapanec language
- TPE : Kokborok
- TPF : Tarpia language
- TPG (disambiguation) : Kula language
- TPK : Tupiniquim language
- TPL : Tlapanec language
- TPM : Tampulma language
- TPN : Tupi language
- TPO : Tai Pao language
- TPP : Pisaflores Tepehua
- TPQ : Kinnauri language
- TPR : Tuparí language
- TPT : Tlachichilco Tepehua
- TPV : Tanapag language
- TPW : Tupi language
- TPX : Tlapanec language
- : Trumai language
- : Tinputz language
- : Tenetehara language
- : Lehali language
- : Sahaptin language
- : Tomoip language
- : Tunni language
- : Torona language
- : Ozumatlán Totonac
- : Touo language
- : Tonkawa language
- TRB (disambiguation) : Terebu language
- TRC : Trique language
- TRD : Turi language
- TRE : Tarangan language
- TRF : Trinidadian Creole
- TRG : Lishán Didán
- TRH (disambiguation) : Turaka language
- TRI tri : Tiriyó language
- : Toram language
- TRL (disambiguation) : Scottish Cant
- TRM : Tregami language
- TRN : Moxos language
- TRO : Tarao language
- TRP : Kokborok
- TRR : Taushiro language
- TRS : Trique language
- TRT : Tunggare language
- TRV : Seediq language
- TRW : Torwali language
- TRX : Tringgus language
- try (disambiguation): Turung language
- TRZ : Torá language
- TSA : Tsaangi language
- TSB : Tsamai language
- TSC : Tswa language
- TSD : Tsakonian language
- TSE tse : Tunisian Sign Language
- TSF : Tamang language
- TSG : Tausug language
- TSH : Tsuvan language
- TSI : Coast Tsimshian language
- : Tshangla language
- tsk : Central Tibetan language
- TSL : Ts'ün-Lao language
- TSM : Turkish Sign Language
- TN : Tswana language
- TSO tso : Tsonga language
- TSP : Tusya language
- : Thai Sign Language
- TSR : Akei language
- TSS : Taiwanese Sign Language
- TST : Tondi Songway Kiini
- TSU : Tsou language
- TSV : Tsogo language
- TSW : Shingini language
- : Mubami language
- : Tebul Sign Language
- : Purépecha language
- TTA : Tutelo language
- TTB : Gaa language
- TTC : Tektitek language
- TTD : Tauade language
- TTE : Bwanabwana language
- TTF : Tuotomb language
- TTG : Tutong language
- TTH tth : Ta’Oi language
- TTI : Tobati language
- : Tooro language
- TTL : Totela language
- TTM : Tutchone language
- TTN : Towei language
- TTO : Ta’Oi language
- TTP : Mbelala language
- : Tawellemmet language
- TTR : Tera language
- TTS : Isan language
- TTT : Tat language (Caucasus)
- TTU : Torau language
- TTV : Titan language
- TTW : Tutoh language
- TTX : Brunei Bisaya language
- TTY : Sikaritai language
- : Kyirong-Kagate language
- TUA tua : Wiarumus language
- tub : Tübatulabal language
- TUC : Mutu language
- TUD : Tuxá language
- tue : Tuyuca language
- TUF : U'wa language
- TUG tug (disambiguation): Tunia language
- : Taulil language
- tui : Tupuri language
- tuk : Turkmen language
- TUL : Tula language
- tun : Tunica language
- : Tucano language
- : Teda language
- tus : Tuscarora language
- tuu : Tututni language
- TUV tuv : Turkana language
- tux (disambiguation): Tuxináwa language
- tuy : Tugen language
- tuz : Turka language
- TVA : Vaghua language
- TVD : Vadi language
- TVE : Te'un language
- TVK : Southeast Ambrym language
- TVM : Tela’a language
- TVN : Tavoyan dialects
- TVO : Tidore language
- TVS : Taita language
- TVT : Tutsa language
- TVU : Nen language
- TVW (disambiguation) : Sedoa language
- : Bidau Creole Portuguese
- TWA (disambiguation) : Twana language
- : Tawbuid language
- TWC : Teshenawa language
- TWD (disambiguation) : Tweants dialect
- TWE : Tewa language (Papuan)
- TWF : Taos dialect
- : Blagar language
- TWH : Tai Dón language
- TW : Akan language
- TWL : Shona language
- : Tawang language
- TWN (disambiguation) : Twendi language
- : Northern Sotho language#Other varieties of Northern Sotho
- twp : Ere language
- : Tasawaq language
- TWR : Tarahumara language
- TWT : Turiwára language
- TWU : Termanu language
- TWW : Tuwari language
- TWX : Manyika dialect
- : Lawangan language
- : Tombonuwo language
- : Tocharian languages
- : Tsetsaut language
- : Totoli language
- : Tangut language
- : Thracian language
- : Ikpeng language
- : Tomini language
- : Tarangan language
- : Toto language
- : Tii language
- : Tartessian language
- : Tonsea language
- : Kayapo language
- : Sabah Bisaya language
- : Malagasy language
- : Tauya language
- tye : Kyenga language
- : O’du language
- : West Teke language
- tyl : Dai Zhuang language
- : Kombai language
- tyr (disambiguation): Tai Daeng language
- TYS : Sapa language
- : Tày Tac language
- : Tshwa language
- : Tuvan language
- : West Teke language
- : Tày language
- TZA : Tanzanian sign languages
- : Tzeltal language
- : Tzotzil language
- : Tzotzil language
- : Tzeltal language
- : Tz’utujil language
- : Talossan language
- : Central Atlas Tamazight
- : Wetarese language
- : Tzotzil language
- : Tzotzil language
- : Tz’utujil language
- : Tzotzil language
- : Tabriak language
- : Tzotzil language
- UAM : Huamoé language
- : Kuan language (Laos)
- UAR (disambiguation) : Tairuma language
- uba : Ubang language
- UBL : Albay Bikol language
- UBM : Mainstream Kenyah language
- UBR : Ubir language
- : Ubykh language
- UDA uda : Enwang-Uda language
- : Udege language
- UDJ : Ujir language
- UDL : Wuzlam language
- udu (disambiguation): Uduk language
- UES : Pancana language
- UFI (disambiguation) : Ufim language
- UGA : Ugaritic language
- UGB : Kuku-Muminh language
- : Ughele language
- ugo : Ugong language
- : Uruguayan Sign Language
- : Uhami language
- : Amung language
- : Iyive language
- : Jijili language
- UKA (disambiguation) : Kaburi language
- : Ukuriguma language
- : Ukhwejo language
- : Russian Sign Language
- UKP : Ukpe-Bayobiri language
- : Ukwa language
- : Ukrainian language
- : Ka'apor Sign Language
- uku : Ukue language
- : Ukwuani-Aboh-Ndoni language
- : Kuuk Yak language
- ULA ula : Fungwa language
- ULB : Ulukwumi language
- ULC : Ulch language
- ULE : Lule language
- ULF : Afra language
- ULK : Meriam language
- ulm (disambiguation): Ulumanda’ language
- ULN : Unserdeutsch language
- ulu (disambiguation): Uma’ Lasan language
- : Sumo languages
- UMA : Umatilla language
- UMB : Umbundu
- UMC : Marrucini
- UMD : Umbindhamu language
- : Umbuygamu language
- UMI umi : Ukit language
- UMM : Umon language
- UMO : Umotína language
- UMP : Umpila language
- UMR : Umbugarla language
- UMS : Pendau language
- UMU umu : Munsee language
- una : Watut language
- UND : ISO 639-3#Non-language codes
- UNE : Uneme language
- : Ngarinyin language
- UNK : Enawene Nawe language
- UNN : Gunai language
- UNP : Worrorra language
- UNR : Mundari language
- unu (disambiguation): Unubahe language
- : Mundari language
- : Kaili language
- : Uokha language
- UPI (disambiguation) : Umeda language
- UPV : Uripiv language
- URA ura : Urarina language
- URB : Ka'apor language
- URC : Giimbiyu language
- ure : Uru language
- URF (disambiguation) : Uradhi language
- : Urigina language
- : Urhobo language
- uri : Urim language
- : Urak Lawoi’ language
- URL (disambiguation) : Urali language
- URM : Urapmin language
- urn (disambiguation): Uruangnirin language
- uro : Ura language (Papua New Guinea)
- URR : Löyöp language
- URT : Urat language
- uru : Urumi language
- : Uruava language
- URW : Sop language
- : Urimo language
- ury URY (disambiguation) : Orya language
- : Kagwahiva language
- USA (disambiguation) : Usarufa language
- USH : Ushoji language
- USI : Kokborok
- usk (disambiguation): Usaghade language
- USP : Uspantek language
- USU : Uya language
- UTA : Otank language
- ute : Colorado River Numic language
- UTP : Amba language (Solomon Islands)
- UTR : Etulo language
- utu (disambiguation): Utu language
- uum : Urum language
- : Pazeh language
- : Ura language (Vanuatu)
- UUU : U language
- : West Uvean language
- : Uri language
- UVL : Lote language
- UWA (disambiguation) : Kuku-Muminh language
- : Uyanga language
- : Northern Uzbek language
- : Southern Uzbek language
- VAA : Vaagri Booli language
- : Vale language
- : Vafsi language
- VAG : Vagla language
- : Varhadi dialect
- : Sekele language
- VAL val : Vehes language
- VAM : Vanimo language
- van (disambiguation): Valman language
- VAP : Vaiphei language
- var : Huarijio language
- VAS vas (disambiguation): Vasavi language
- vau : Vanuma language
- vav : Varli language
- : Vayu language
- : Southeast Babar language
- VBK : Bontoc language
- VED : Vedda language
- vel (disambiguation): Veluws dialect
- : Vemgo-Mabas language
- ven : Venda language
- : Ventureño language
- VEP : Veps language
- ver : Vere language
- VGR : Vaghri language
- vid : Vidunda language
- vif : Vili language
- vig : Vyemo language
- VIL : Vilela language
- vin : Vinza language
- VIV : Iduna language
- : Ngarluma language
- : Jijili language
- : Kujargé language
- : Kaur language
- : Kulisusu language
- VKM : Kamakan language
- : Kodeoha language
- : Kristi language
- VKT : Kutai Malay
- : Kurrama language
- : Komering language
- VLP : Valpei language
- : Vera'a language
- VMA : Martuthunira language
- : Mbabaram language
- VMC : Silacayoapan Mixtec
- VME : Masela language
- VMF : Main-Franconian dialects
- VMI : Wunambal language
- : Makhuwa language
- : Malgana language
- VMO : Minangkabau language
- : Soyaltepec Mazatec
- VMR : Makhuwa language
- VMS : Moksela language
- : Guugu Yalandji language
- : Chico language
- : Makhuwa language
- : Ayautla Mazatec
- : Mazatlán Mazatec
- : Lovono language
- : Vinmavis language
- : Vunapu language
- : Volapük
- vor : Voro language (Adamawa)
- VRA : Vera'a language
- : Võro language
- VRS : Varisi language
- VRT : Burmbar language
- VSI : Russian Sign Language
- VSL : Venezuelan Sign Language
- VSV : Valencian Sign Language
- VTO : Vitou language
- vum : Vumbu language
- : Central Kilimanjaro language
- VUT : Vute language
- : Wa language
- WAA : Sahaptin language
- WAB : Wab language
- WAC : Upper Chinook language
- WAD : Wandamen language
- WAF : Wakoná language
- wag (disambiguation): Taupota language
- wah (disambiguation): Watubela language
- wai : Wares language
- : Waffa language
- WAL wal : Wolaytta language
- WAM : Massachusett language
- WAN wan : Wan language
- wao : Wappo language
- WAP : Wapishana language
- : Wagiman language
- WAS : Washo language
- wat (disambiguation): Kaninuwa language
- wau : Waurá language
- : Waka language
- WAW : Waiwai language
- wax (disambiguation): Marangis language
- WAY way : Wayana language
- waz : Wampur language
- WBA : Warao language
- : Wabo language
- : Waritai language
- WBF : Samwe language
- : Wanda language
- WBI : Vwanji language
- : Alagwa language
- : Waigali language
- : Wakhi language
- : Wa language
- : Warlpiri language
- : Waddar language
- wbr : Wagdi language
- WBT : Wanman language
- : Wajarri language
- : Woi language
- WCA : Waiká language
- WCI : Ewe language
- : Wanzi language
- : Wadaginam language
- : Wagaydy language
- : Yarli language
- : Bidjara language
- WEA : S'gaw Karen language
- WEC : Guere language
- WED : Taupota language
- WEG : Wergaia
- weh : Weh language
- wei : Were language
- WEM : Fon language
- WEO : Wemale language
- WEP : Westphalian language
- WER : Kunimaipa language
- wes : Cameroonian Pidgin English
- : Welaung language
- : Wejewa language
- WFG : Zorop language
- WGA : Wagaya language
- : Wangganguru dialect
- WGI : Wahgi language
- WGO : Waigeo language
- : Wirangu language
- WGY : Warrgamay language
- WHA : Manusela language
- : Wahgi language
- : Wahau Kenyah language
- WHU : Kayan language (Borneo)
- WIB : Tusya language
- WIC (disambiguation) : Wichita language
- : Wik-Me'nh language
- WIF : Wik-Me'nh language
- wig (disambiguation): Wik-Ngathan language
- : Wik-Me'nh language
- WII : Minidien language
- : Wik-Mungknh language
- wik : Wik-Ngatharr dialect
- WIL wil (disambiguation): Wunambal language
- WIM : Wik-Mungknh language
- win : Winnebago language
- wir (disambiguation): Kagwahiva language
- WIT : Wintu language
- : Vitu language
- : Wirangu language
- : Wiyot language
- : Waja language
- : Warji language
- WKA : Kw'adza language
- WKD : Wakde language
- WKW : Wakawaka language
- : Wanggamala language
- WLA : Walio language
- : Silt'e language
- WLG : Gunbarlang language
- WLI : Waioli language
- : Wailaki language
- WLL : Hill Nubian languages
- WLM : Middle Welsh
- WLO : Wolio language
- WLR : Wailapa language
- WLS : Wallisian language
- WLU : Wuliwuli language
- : Wichí Lhamtés Vejoz
- WLW (disambiguation) : Walak language
- : Wali language (Gur)
- WMA : Mawa language (Nigeria)
- : Wambaya language
- WMC : Wamas language
- WMD : Mamaindê language
- WME : Wambule language
- WMH : Waimoa language
- WMI : Wamin language
- WMM : Maiwa language (Sulawesi)
- : Waamwang language
- WMO (disambiguation) : Wom language (Papua New Guinea)
- WMS : Wambon language
- WMT : Walmajarri language
- : Mwani language
- : Womo language
- : Wanambre language
- WNC : Wantoat language
- : Warndarang language
- : Waneci dialect
- : Kombai language
- : Comorian language
- : Wanukaka language
- : Wanggamala language
- WNN (disambiguation) : Mayi-Kulan language
- WNO : Wano language
- WNP : Wanap language
- WNU : Usan language
- : Wintu language
- WNY : Wanyi language
- WOA : Malak-Malak language
- WOB : Wobé language
- WOC : Wogeo language
- : Wolani language
- woe : Woleaian language
- WOF : Wolof language
- WOG : Wogamusin language
- WOI : Woisika language
- : Voko language
- wol : Wolof language
- won : Wongo language
- woo : Manombai language
- WOR : Woria language
- WOS : Kwasengen language
- wow : Wawonii language
- : Weyto language
- WRA : Barupu language
- : Warluwara language
- : List of unclassified languages according to the Ethnologue#Asia
- WRE : Ware language
- WRG : Warrungu language
- : Wiradjuri language
- WRI : Mantharta language
- : Garawa language
- WRL : Warlmanpa language
- WRM : Warumungu language
- WRN : Werni language
- WRO : Worrorra language
- WRP : Waropen language
- WRR : Wardaman language
- WRS : Waris language
- WRU : Waru language
- : Waruna language
- : Gugu Warra language
- WRX : Wae Rana language
- WRY : Marwari language
- : Warray language
- WSA : Warembori language
- WSI : Wusi language
- : Waskia language
- WSR : Owenia language
- WSS : Akan language
- WSU : Wasu language
- WSV : Wotapuri-Katarqalai language
- : Wathawurrung language
- WTI : Berta language
- : Watakataui language
- : Mewati language
- wtw : Wotu language
- WUA : Kuku-Muminh language
- WUB : Wunambal language
- : Ewe language
- : Wutun language
- : Silimo language
- : Wumbvu language
- : Bungu language
- : Wurrugu language
- WUT : Wutung language
- : Wu Chinese
- : Wuvulu-Aua language
- : Wulna language
- : Ma'ya language
- : Wakabunga language
- : Dorig language
- : Warrwa language
- : Waxiang Chinese
- : Noongar language
- WYA : Wyandot language
- : Ngiyambaa language
- : Woiwurrung language
- : Vilamovian language
- : Wayoró language
- : Western Fijian language
- XAA : Andalusian Arabic
- : Sambe language
- XAC : Kachari language
- XAD : Adai language
- : Aequian language
- XAG : Caucasian Albanian language
- : Ngaju language
- : Kaimbé language
- : Kalmyk Oirat
- xan : Xamtanga language
- : Khao language
- XAP : Apalachee language
- : Aquitanian language
- xar : Karami language
- XAS : Kamassian language
- XAT : Katawixi language
- XAU : Kauwera language
- : Xavante language
- : Kawaiisu language
- : Kayan language (Borneo)
- : Kamba language (Brazil)
- : Lower Burdekin languages
- : Bactrian language
- : Bindal language
- : Bungandidj language
- : Kombio language
- : Worimi language
- : Breton language
- : Kenaboi language
- : Bulgar language
- : Noongar language
- XBR : Kambera language
- : Kambiwá language
- : Kabixí language
- : Gabi-Gabi language
- : Cumbric language
- : Camunic language
- : Celtiberian language
- : Cisalpine Gaulish
- XCH : Chemakum language
- : Comecrudo language
- : Cotoname language
- : Khwarezmian language
- XCR : Carian language
- : Classical Tibetan
- : Curonian language
- : Chuvantsy language
- : Coahuilteco language
- : Cayuse language
- XDA : Darkinjung language
- : Dacian language
- XDK : Dharug language
- XDM : Edomite language
- : Bamayo language
- : Eblaite language
- XED : Hdi language
- : ǁXegwi language
- : Kelo language
- : Kembayan language
- : Isthmian script
- XER : Xerénte language
- : Kesawai language
- XET : Xeta language
- : Keoru language
- : Faliscan language
- : Galatian language
- : Gbin language
- : Gudang dialect
- : Tongva language
- : Noongar language
- : Biri language
- : Galindian language
- : Bayali language
- : Garza language
- : Worrorra language
- : Guwa language
- : Minaean language
- : Hunnic language
- XHD : Hadramautic language
- : Khetrani language
- : Xhosa language
- : Hernici
- : Hattic language
- : Hurrian language
- : Bru language
- xia : Achang language
- : Iberian language
- : Xiri language
- : Illyrian languages
- xin : Xincan languages
- : Xipináwa language
- : Shiriana language
- : Harappan language
- : Xipaya language
- : Bandjalang language
- : Dhudhuroa language
- : Kalkoti language
- : Ede language
- : Kho'ini dialect
- : Kayan language (Borneo)
- : Krio Dayak language
- : Kheng language
- : Kita Maninka language
- : Karahawyana language
- : Kenyan Sign Language
- : Kaco’ language
- : Mainstream Kenyah language
- : Mainstream Kenyah language
- : Kayan language (Borneo)
- XKO : Kiorr language
- : Tati language (Iran)
- : Kulisusu language
- XKR : Xakriabá language
- : Kumbewaha language
- : Kantosi language
- : Bembe language (Kibembe)
- : Kgalagadi language
- : Kembra language
- : Karore language
- : Uma’ Lasan language
- : Kurtöp language
- XLA : Kamula language
- XLB : Loup language
- : Lycian language
- XLD : Lydian language
- : Lemnian language
- : Ligurian language (ancient)
- : Liburnian language
- : Scythian languages
- : Loup language
- : Lepontic language
- XLS : Lusitanian language
- : Luwian language
- : Elymian language
- XMA : Zigula language
- : Mboa language
- : Makhuwa language
- : Mbudum language
- : Median language
- : Mingrelian language
- : Məgaka language
- : Kuku-Muminh language
- : Spurious languages
- : Majera language
- : Malaysian Sign Language
- XMM : Manado Malay
- : Middle Persian
- : Kagwahiva language
- XMP : Kuku-Muminh language
- : Kuku-Muminh language
- XMS : Moroccan Sign Language
- XMT : Matbat language
- XMU : Kamu language
- : Malagasy language
- : Malagasy language
- : Ma'ya language
- : Mayi-Kutuna language
- : Mori Bawah language
- : Kanakanabu language
- : Middle Mongol language
- : Kuan language
- : Ngarigo language
- : Noongar language
- : Kankanaey language
- XNO (disambiguation) : Anglo-Norman language
- : Kangri language
- XNS : Kanashi language
- : Narragansett language
- : Nukunul language
- : Western Desert language
- : Dongolawi language
- xoc : O’chi’chi’ language
- : Kokoda language
- : Kominimung language
- : Xokleng language
- XOM xom : Komo language
- : Konkomba language
- : Xukuru language
- XOP : Kopar language
- XOR (disambiguation) : Matsés language
- : Kowaki language
- XPE : Kpelle language
- XPG : Phrygian language
- : Pictish language
- : Mpalitjanh dialect
- : Kulino language
- XPM : Pumpokol language
- XPN : Kapinawá language
- : Pochutec language
- XPP : Baekje language
- : Mohegan-Pequot language
- : Parthian language
- XPS : Pisidian language
- XPT : Wangkumara language
- : Punic language
- : Buyeo language
- : Timbira language
- : Karaboro languages
- XRD : Ngunnawal language
- : Kreye language
- : Noongar language
- : Timbira language
- : Aramaic language
- : Arin language
- : Karranga language
- : Raetic language
- XRT : Aranama language
- : Marrithiyel language
- : Karawa language
- : Sabaean language
- : Sambali language
- XSC : Scythian languages
- : Sidetic language
- : Sempan language
- : Shamang language
- XSI : Sio language
- : Subi language
- : Saka language
- XSL (disambiguation) : Slavey language
- xsm : Kasem language
- : Sanga language
- : Solano language
- XSP : Silopi language
- : Makhuwa language
- : Sherpa language
- XST : Silt'e language
- : Sanumá language
- : Sudovian language
- : Saisiyat language
- : Silacayoapan Mixtec
- XTC (disambiguation) : Kadugli language
- : Tilantongo Mixtec
- : Ketengban language
- : Gaulish language
- : Yitha Yitha language
- : Tocharian languages
- : Saka language
- : Kokborok
- XTS : Sindihui Mixtec
- : Thawa language
- : Mamaindê language
- : Tasmanian languages
- : Kurumba language
- : Betta Kurumba language
- : Worrorra language
- : Awngi language
- : Kunigami language
- : Kurumba language
- : Ngunnawal language
- : Umbrian language
- xun : Worrorra language
- : Kuo language
- : Upper Umpqua language
- : Urartian language
- : Kuthant language
- : Khwe language
- : Venetic language
- : Kamviri dialect
- : Vandalic language
- : Volscian language
- : Vestinian language
- : Kwaza language
- : Woccon language
- : Wadi Wadi language
- : Pherá language
- : Kwegu language
- : Noongar language
- : Wangkumara language
- : Phla language
- : Oirat language
- : Kwerba Mamberamo language
- : Wergaia
- : Wemba Wemba language
- : Boro language (Ghana)
- : Li'o language
- : Minkin language
- : Koropó language
- : Tambora language
- : Yaygir language
- : Bidjara language
- : Mayi-Kulan language
- : Mayi-Kulan language
- : Mamaindê language
- : Mayi-Kulan language
- : Yorta Yorta language
- : Zhang-Zhung language
- : Semigallian language
- : Mesoamerican writing systems#Zapotec writing
- YAA : Yaminawa language
- YAB : Hup language
- YAC : Yali language
- YAF : Yaka language (Congo–Angola)
- : Yaghan language
- : Yangere language
- yak (disambiguation): Sahaptin language
- YAL : Yalunka language
- yam : Yamba language
- yan : Sumo languages
- : Yaqui language
- yar : Mapoyo-Yabarana language
- YAS : Gunu language
- yat (disambiguation): Yambeta language
- yau : Hodï language
- yaw : Yawalapití language
- : Mbunda language
- yay : Gwune language
- yaz : Loko language (Nigeria)
- : Yala language
- : Yemba language
- : Ramree dialect
- : Yakkha language
- YBI : Yamphu language
- : Hasha language
- : Muji language
- YBL : Yukuben language
- : Yabaâna language
- : Yabong language
- : Yawiyo language
- : Yaweyuha language
- : Loloish languages#Chesu
- YCL : Lolopo language
- : Yucuna language
- YCP : Akeu language
- YDA : Yanda language
- : Yiddish language
- : Yidgha language
- : Yoidik language
- YDS : List of sign languages#Yiddish
- : Yimas language
- YEI yei : Yeni language
- : Yevanic language
- : Yela language
- yen (disambiguation): Yendang language
- YER : Tarok language
- yes : Nyankpa language
- yet : Yetfa language
- : Yerukala language
- YEV : Yapunda language
- : Yeyi language
- YGA : Yarli language
- : Bidjara language
- YGM : Muratayak language
- : Gepo language
- : Yagaria language
- : Yugul language
- : Yagwoia language
- YHA : Buyang language
- : Judeo-Iraqi Arabic
- : Phowa language
- : Yinggarda language
- : Yinglish
- YID : Yiddish language
- : Loloish languages#Ache
- YIG : Nasu language
- : Yinjibarndi language
- : Lalo language
- : Wagaya language
- yim : Yimchungrü language
- yin : Riang language
- YIO : Lipo language
- yip : Pholo language
- : Micha language
- : Aghu language
- yis : Yis language
- : Lalo language
- : Lope language
- : Nisu language
- : Axi language
- : Yir-Yoront language
- : Azhe language
- YKA : Yakan language
- : Tundra Yukaghir language
- YKI : Yoke language
- YKK : Yakaikeke language
- : Khlula language
- YKM : Yakamul language
- : Yasa language
- : Yekora language
- : Kathu language
- : Ngbandi language
- : Yaul language
- : Wagawaga language (New Guinea)
- : Yele language
- : Yelogu language
- : Yali language
- : Yil language
- YLM : Loloish languages#Limi
- : Buyang language
- : Naluo language
- : Yalarnnga language
- : Aribwaung language
- : Nyâlayu language
- YMA : Yamphu language
- : Yambes language
- YMC : Muji language
- : Muda language
- YME : Yameo language
- YMG : Losengo language
- : Loloish languages#Mili
- : Moji language
- : Muji language
- : Makwe language
- YML : Yamalele language
- YMM : Maay language
- : Yamna language
- : Yamap language
- : Muji language
- : Mysian language
- YMT : Mator language
- : Muji language
- : Muzi language
- YNA : Aluo language
- : Yandruwandha language
- : Lang'e language
- YNG : Monzombo language
- : Yangho language
- YNK : Naukan Yupik language
- : Yangulam language
- YNN : Yana language
- : Yendang language
- : Yansi language
- : Yauna language
- YOG : Yogad language
- : Yonaguni language
- yok : Yokutsan languages
- : Yola language
- : Kongo language
- : Yonggom language
- : Yoruba language
- : Zou language
- yot : Yendang language
- : Amami language
- : Yoy language
- YPA : Phola language
- : Phowa language
- YPG : Phola language
- : Phupha language
- YPL : Phola language
- : Muji language
- : Phowa language
- YPO : Phola language
- : Phupha language
- : Phowa language
- : Phupha language
- : Yerakai language
- : Yareba language
- : Yaure language
- : Yarí language
- : Nenets languages
- : Nheengatu language
- : Yirrk-Thangalkl dialect
- : Buyang language
- YRS : Yarsun language
- : Yarawata language
- : Ngamini language
- : Yassic dialect
- : Samatao language
- YSL : Yugoslav Sign Language
- YSN : Sani language
- YSO : Mantsi language
- YSP : Lolopo language
- YSR : Sirenik Eskimo language
- : Yessan language
- : Sanie language
- YTA : Lavu language
- YTL : Tholo language
- : Thopho language
- : Domung language
- : Gudang dialect
- yua : Yucatec Maya language
- : Yugambeh language
- : Yuchi language
- yud : Judeo-Tripolitanian Arabic
- : Havasupai–Hualapai language
- yug : Yugh language
- yui : Wajiara language
- YUJ : Karkar language
- yuk : Yuki language
- yul : Yulu language
- yun : Bena language (Adamawa)
- YUP yup : Yukpa language
- : Yuqui language
- : Yucatec Maya language
- YUT : Yopno language
- : Yugh language
- : Yau language
- YUX : Southern Yukaghir language
- : Eastern Yugur language
- : Yuracaré language
- : Yawa language
- : Yavitero language
- : Kalou language
- : Yinhawangka language
- : Lalo language
- : Nasu language
- : Yaminawa language
- : Nasu language
- : Yawuru language
- : Lalo language
- : Nasu language
- : Yandruwandha language
- : Turrubal language
- : Yarli language
- : Yinwum dialect
- : Yuyu language
- YXY : Yabula-Yabula language
- : Nisu language
- : Yir-Yoront language
- YYU : Yau language (Torricelli)
- : Loloish languages#Ayizi
- : Buyang language
- : Zokhuo language
- : Ixtlán Zapotec
- : Ocotlán Zapotec
- : Cajonos Zapotec
- : Ixtlán Zapotec
- ZAF : Ayoquesco Zapotec
- ZAH zah : Zangwal language
- : Isthmus Zapotec
- : Zaramo language
- : Zanaki language
- zal (disambiguation): Zauzou language
- zao : Ozolotepec Zapotec
- : Aloápam Zapotec
- : Albarradas Zapotec
- zat (disambiguation): Tabaa Zapotec
- : Zangskari dialect
- : Yatzachi Zapotec
- : Mitla Zapotec
- zax : Xadani Zapotec
- zay : Zayse-Zergulla language
- zaz : Zari language
- ZBC : Berawan language
- : Berawan language
- ZBT : Batui language
- ZBW (disambiguation) : Berawan language
- : Coatecas Altas Zapotec
- : Zhuang languages
- : Comorian language
- : Mumeng language
- : Eastern Hongshuihe Zhuang
- zen (disambiguation): Zenaga language
- : Kinga language
- ZGB : Zhuang languages
- : Min Zhuang language
- : Yei Zhuang language
- : Magori language
- : Zhuang languages
- : Zhaba language
- : Dai Zhuang language
- : Zhire language
- : Nong Zhuang language
- : Chinese language
- : Zhoa language
- zib : Zimbabwean sign languages
- : Zimakani language
- ZIL : Zialo language
- zir (disambiguation): Ziriya language
- : Zigula language
- : Zizilivakan language
- ZKA : Kaimbulawa language
- : Sak language
- : Goguryeo language
- : Karankawa language
- : Sak language
- : Kott language
- : São Paulo Kaingáng language
- : Zakhring language
- : Khitan language
- : Kaurna language
- : Khazar language
- : Zhuang languages
- : Malay language
- : Zhuang languages
- : Zhuang languages
- ZMA : Wagaydy language
- ZMB : Zimba language
- : Bidjara language
- : Marrithiyel language
- : Giimbiyu language
- : Mfinu language
- : Maringarr language
- : Makolkol language
- : Minangkabau language
- : Marrithiyel language
- : Bidjara language
- : Matngele language
- ZMM : Marrithiyel language
- : Mbangwe language
- : Molo language
- ZMP : Mpuono language
- : Mituku language
- : Marranj language
- ZMS : Mbesa language
- : Muruwari language
- : Mbariman-Gudhinma language
- ZMW : Mbo language (Congo)
- : Bomitaba language
- : Marrithiyel language
- : Mbandja language
- : Zan Gula language
- ZNE : Zande language
- : Mang language
- : Manangkari language
- ZNS : Mangas language
- ZOC : Chiapas Zoque
- : Chimalapa Zoque
- : Zou language
- : Ayapa Zoque
- zor : Chiapas Zoque
- : Chiapas Zoque
- : Lachiguiri Zapotec
- : Choapan Zapotec
- : Yavesía Zapotec
- ZPE : Petapa Zapotec
- : Quiatoni Zapotec
- : Totomachapan Zapotec
- ZPI : Quiegolani Zapotec
- : Quiavicuzas Zapotec
- : Tlacolulita Zapotec
- : San Juan Mixtepec Zapotec
- : Yatzechi Zapotec
- : Zoogocho Zapotec
- ZPR : Xanica Zapotec
- : Santo Domingo Coatlán Zapotec
- ZPT : San Vicente Zapotec
- : Yalálag Zapotec
- : Chichicapan Zapotec
- : Zaniza Zapotec
- : San Baltázar Loxicha Zapotec
- : Mazaltepec Zapotec
- : Texmelucan Zapotec
- : Yei Zhuang language
- : Gaya language
- : Mirgan language
- : Zirenkel language
- : Záparo language
- ZRP : Zarphatic language
- ZRS : Mairasi language
- : Kaskian language
- ZSL : Zambian Sign Language
- ZSM : Malaysian language
- : Rincón Zapotec
- ZSU : Adzera language
- : Yatee Zapotec
- : Xanaguía Zapotec
- ztl : Lapaguía Zapotec
- : San Agustín Mixtepec Zapotec
- : Santa Catarina Albarradas Zapotec
- : Loxicha Zapotec
- : Quioquitani Zapotec
- : Tilquiapan Zapotec
- : Tejalapan Zapotec
- : Güilá Zapotec
- : Zaachila Zapotec
- : Yatee Zapotec
- : Zeem language
- : Tokano language
- : Zulu language
- ZUM : Kumzari dialect
- : Zumaya language
- : Zay language
- zxx : ISO 639-3#Non-language codes
- : Yongbei Zhuang
- : Yang Zhuang language
- : Youjiang Zhuang
- : Yongnan languages
- : Zyphe language
- : Zazaki language
- : Zhuang languages
- CDD : Caddoan languages
- CDC : Chadic languages
- ITC : Italic languages
- : Manobo languages
- ALV : Atlantic–Congo languages
- NGF : Trans–New Guinea languages
- CUS : Cushitic languages
- AUF : Arawan languages
- GME : East Germanic languages
- AUS : Australian Aboriginal languages
- ROA roa : Romance languages
- : North Germanic languages
- : West Germanic languages
- TRK : Turkic languages
- : Tibeto-Burman languages
- : Quechua languages
- SSA : Nilo-Saharan languages
- day (disambiguation): Land Dayak languages
- GEM gem : Germanic languages
- : East Slavic languages
- CRP : Creole language
- CMC : Chamic languages
- : South Slavic languages
- : Sinitic languages
- : Armenian language
- : Uralic languages
- : Mongolic languages
- kdo : Kordofanian languages
- ART art (disambiguation): Codes for constructed languages
- DMN : Mande languages
- SEM : Semitic languages
- nub : Nubian languages
- BTK : Batak languages
- ijo : Ijaw languages
- : West Slavic languages
- ESX : Eskimo–Aleut languages
- SMI : Sami languages
- : Iroquoian languages
- ira : Iranian languages
- mun : Munda languages
- TUP tup : Tupian languages
- : Tungusic languages
- PLF : Central Malayo-Polynesian languages
- : Oto-Manguean languages
- : Albanian language
- : Finno-Ugric languages
- ATH ath (disambiguation): Athabaskan languages
- DRA : Dravidian languages
- poz : Malayo-Polynesian languages
- SGN : List of sign languages
- : Wakashan languages
- : Austroasiatic languages
- SDV : Eastern Sudanic languages
- HMX (disambiguation) : Hmong–Mien languages
- AQL : Algic languages
- KHI (disambiguation) : Khoisan languages
- : Basque language
- : Uto-Aztecan languages
- CAU : Languages of the Caucasus
- cai : Mesoamerican languages
- AAV : Austroasiatic languages
- SLA : Slavic languages
- SAI sai : Indigenous languages of the Americas
- CBA : Chibchan languages
- PRA pra : Prakrit
- sal : Salishan languages
- CPF : French-based creole languages
- : Mayan languages
- INC : Indo-Aryan languages
- nai : Indigenous languages of the Americas
- PAA : Papuan languages
- CSU : Central Sudanic languages
- : Yupik languages
- SIO sio : Siouan languages
- grk : Hellenic languages
- : Na-Dene languages
- phi (disambiguation): Philippine languages
- : Eastern Malayo-Polynesian languages
- SYD syd : Samoyedic languages
- kar : Karen languages
- : Western Malayo-Polynesian languages
- AWD : Arawakan languages
- EGX : Egyptian language
- CPE : English-based creole languages
- CCS : Kartvelian languages
- CCN : North Caucasian languages
- CPP : Portuguese-based creole languages