G2

G2, G02, G.II, G II, or G-2 may refer to:

Fiction

Transformers: Generation 2: Part of the Transformers franchise, lasting 1992-1995
Transformers: Generation 2 (comics), by Marvel Comics
G2, an android in the movie Inspector Gadget 2

G2, a stellar classification
G₂ (mathematics), an exceptional Lie group
G2, a soil erosion model
G2 gas cloud, an astronomical object on a collision course with the super massive black hole at the center of the Milky Way
G₂ phase, part of the cell cycle
ATC code G02 Other gynecologicals, a subgroup of the Anatomical Therapeutic Chemical Classification System
Ovoglobulin G2, a protein in egg white
Haplogroup G2, a subclade of Haplogroup G (Y-DNA)
g−2, the notation for the anomalous magnetic dipole moment in physics
- Muon g-2 experiment at Fermilab (E989)
g⁽²⁾, degree of second order coherence in quantum optics
G2, an informal group of fossil bird eggs from the Gobi desert that were later named Gobioolithus major

County Route G2 (California), also known as Lawrence Expressway
G2 Beijing–Shanghai Expressway, China
Glasspar G2, a sports car
Grumman Gulfstream II, a business jet built
Fiat G.2, a 1932 Italian transport aircraft
Galactic 02 (G02), a suborbital tourist spaceflight on 10 August 2023 from Virgin Galactic
G2, the Avirex Gabon IATA airline designator
G2, a class of driver's license in Ontario, Canada
Pontiac G2, a hatchback sold in Mexico

G2, a designation in NATO's Continental staff system, related to Military Intelligence
- G-2 (intelligence), the United States Army unit
Directorate of Military Intelligence (Ireland), commonly referred to as "G2"
Dirección de Inteligencia, Cuba, also referred to as "G2"
Pindad G2, a handgun produced by Pindad
AEG G.II, a German World War I bomber
Albatros G.II, a 1916 German biplane bomber prototype
Friedrichshafen G.II, a 1916 German medium bomber aircraft
HMAS Nestor (G02), a 1940 Royal Australian Navy N-class destroyer
Gotha G.II, a German bomber during World War I
Soko G-2, a 1961 Yugoslavian two-seat aircraft
USS G-2 (SS-27), an American submarine

G2, The Guardian weekday supplement
G2 Esports, a European eSports organization
Group of Two, a proposed informal special relationship between the United States and China
G-2 visa, a nonimmigrant visa which allows travel to the United States
G2 (rapper), the stage name of South Korean rapper Kevin Hwang
G2, a block of character codes in the Teletext character set
G2 (film), an upcoming Indian Telugu-language action spy film sequel to Goodachari