This is a list of sportspeople who have competed for more than one nation. Not included in this list are:
Players who could choose to play for a new country after the dissolution of their former country. This mainly affected players from the former Soviet Union, such as Viktor Onopko, and the former Yugoslavia, such as Davor Šuker.
Players who represented the country they moved to in childhood. Frequently, the home countries of such players are former colonies of their future countries (such as Patrick Vieira, born in Senegal but moved to France in childhood). Another example of such a player was Marcel Desailly, a Ghana-born player who was adopted in childhood by a French diplomat and raised in France.
Players who could have chosen to represent another country due to their birthplace, parentage, ancestry (i.e., at least one grandparent), and/or residence. Some notable examples:
Former England internationalOwen Hargreaves's birth in Canada made him eligible for that country, he was eligible to play for England through his father and Wales through his mother, and his residence in Germany would have made him eligible for that country also.
However, players who actually represented one country, either at junior or senior level, before representing a second country are included, even if they qualify by ancestry. For example:
In rugby union, Diego Domínguez played for Argentina at senior level before playing for Italy, for which he qualified via a grandparent. Similarly, Clyde Rathbone represented South Africa at U-21 level before opting for Australia at senior level, and Isaac Boss represented New Zealand at U-19 level before choosing Ireland at senior level; both also qualified for their new countries via a grandparent. Daniel Vickerman represented South Africa at U21 level, but then went on to play 63 times for Australia, including two Rugby World Cup finals.
Parenthetical date spans such as (1935–1937) or (1935–1935) report first and last representative appearances in World and European championship tournaments, according to the World Bridge Federation and European Bridge League shared database (WBF People Finder or EBL Player Lookup). This list does not cover, say, US immigrant participation in United States Bridge Championships competition to determine US representatives—so to speak, transfers of national eligibility not consummated by play as national representatives.
Single dates imply one known representative international appearance, such as one-time play in the now-biennial Bermuda Bowl tournament.[7]
Until German courts were forced to rule on the eligibility of Miroslav Sikora in 1987, it was forbidden to compete for more than one nation in IIHF events.[42]
^Some entries in international Teams or Pairs tournaments have represented WBF geographical zones such as North America, rather than any "bridge nation" such as Canada. A change of zones qualifies in the spirit of this table, which lists the nationalities rather than the zones without reference to the national/zonal details.
^"Rixi Markus". WBF. Austria and Great Britain won Ladies and Women world team championships with Rixi Markus and she enjoys the greatest historical reputation among their players.
^"Bjorn Fallenius". WBF. 2011-09-29. Fallenius played for one team representing USA (2004) and played with Americans in many transnational events. Since then he has played for at least one team representing Sweden. See also Cavendish Invitational regarding his move to New York City.
^"Benito Garozzo". WBF. 2014-06-27. Between his play on open and senior teams, Garozzo represented Italy as coach of youth teams in European and World competition 1994 to 1996.
^After his debut, FIFA disqualified Tiago Silva to play for Bulgaria.
^Represented Germany at U-18, U-19 & U-20 levels before choosing the Philippines at senior level.
^Represented the Philippines in 1917 at senior level before choosing Spain at senior level, whom he represented from 1921–1923. Also represented Catalonia from 1915–1924.
^Played for Australia at under-19 level before choosing Italy at senior level.
^Although Steve was born in Australia from Tongan heritage, he represented Australia at U20 level before switching allegiance and representing Tonga at senior international level.
^Played for France at under-21 level before attending university in the United States and playing American football there. After a brief NFL career, he returned to rugby union and represented the USA at senior level.
^Represented South Africa at 7s and toured with the Springboks but never played a test match
^ abHis Samoan father, Brayn Williams, represented New Zealand at test level.
^Represented New Zealand at under-21 level, then represented Samoa at senior level, and still later represented New Zealand at senior level.
^Represented NZ at test level before switching back to Samoa and playing test rugby for Samoa.
^ abRepresented Samoa before switching allegiance to New Zealand.
^Bachop played for Samoa before playing for NZ later returning to play for Samoa.
^Va'aiga Tuigamala played international rugby union for New Zealand before playing international rugby league for Samoa then playing international rugby union for Samoa.
^Manu's four elder brothers all represented Samoa.
^Gage later returned to South Africa and represented South Africa.
^Captained SA 7's before playing and captaining Ireland.
^Played for South Africa at U19 level. His brother played for South Africa in a non-cap match and his cousin has been capped for South Africa.
^Represented both Scotland and South Africa at test level.
^South African born from Scottish stock, Aitken represented Scotland at the Hong Kong Sevens while studying at Oxford University before returning to SA and representing SA at international level.
^Captained South Africa at under-21 level before choosing Australia at senior level.
^Captained South Africa in test rugby before playing for Australia.
^Played for South Africa at under-21 level before choosing Australia at senior level.
^Stewart was born while his South African parents were on holiday in Canada. He learnt his rugby in SA, then played for Canada, then returned and played for South Africa.
^Lentz played U21 rugby for SA before playing for the US.
^Played 7's for SA before playing 15's for the US.
^NZ born Vuna played international rugby league for Tonga before switching to union and Aus.
^Born in the USA but raised in England, Corbisiero represented both the USA and England at U19 level, then played for England at U20 level before choosing England at senior level.
^Swam for Northern Ireland at Commonwealth Games level while representing both nations
^During the most of her tennis career, the maiden name Gajdošová was used. From 2009 to 2011, she changed her married name to Groth after her marriage to fellow tennis player Sam Groth. Between 2016 until her retirement in 2017, she changed her married name to Wolfe.
^Dokic represented Australia once again after Serbia and Montenegro split and separate independent countries.
^Represented Nauru at the Commonwealth Games. Competed for Samoa after successfully applied for Samoan citizenship to participate at the 1992 Olympics in Barcelona due to Nauru not having an Olympic committee at that time. Later represented his home country Nauru 1993, 1996 and 2000 Summer Olympics.
Mexico
Netherlands
Georgia[2]
United States
Moldova
Italy
France
Bulgaria
Turkey
Albania
Slovakia
Germany
Nigeria (junior)
United States
Northern Mariana Islands U20
Philippines
Guam
Dominican Republic
Jamaica
Canada
Monaco
Australia
Soviet Union
Poland
Great Britain
Denmark / 
Bermuda
India
Nepal
Russia
Austria
Czech Republic
Spain
Sweden
England
Switzerland
China
Malaysia
Ukraine
Uzbekistan
Belarus
Zimbabwe
Ireland
South Africa
Japan
United Arab Emirates
Iceland
Belgium
Croatia
Israel
Scotland
New Zealand
Puerto Rico
Norway
Chinese Taipei
Serbia
Azerbaijan
Netherlands Antilles
Aruba
South Korea
Kazakhstan
Hungary
Isle of Man
Yugoslavia
Bosnia and Herzegovina
Cambodia
Romania
Brazil
Montenegro
Bosnia and Herzegovina
Singapore
Bahrain
Samoa
England at rugby union.
New Zealand at rugby league.
Northern Ireland at Commonwealth Games level while representing both nations