GG
- .gg
- G. G. (album)
- GG (New York City Subway service)
- GG (gaming)
- GG Allin
- GG Duetto
- Gadu-Gadu
- Galle Gladiators
- Game Gear
- Game Genie
- Game Grumps
- GameGuard
- Gamergate (harassment campaign)
- Gee Gee (disambiguation)
- General Government
- Gigagram
- Gigi (disambiguation)
- Girls' Generation
- Gish gallop
- Glenanne gang
- Goldcorp
- Gossip Girl
- Governor-general
- Groß-Gerau
- Grundgesetz
- Gucci
- Gudang Garam
- Guilty Gear
- Kenkyūsha's New Japanese-English Dictionary
- Ottawa Gee-Gees
- PRR GG1
- Sky Lease Cargo
- Subaru Impreza (second generation)
- The G.G. Shinobi
- The Underwater Menace