GBC
- Gambler's Book Shop / GBC Press
- Game Boy Camera
- Game Boy Color
- Garo Baptist Convention
- Gender Balance Council
- General Binding Corporation
- George Brown College
- Georgia Baptist Convention
- Germantown Baptist Church
- Get Busy Committee
- Ghana Broadcasting Corporation
- Gibraltar Broadcasting Corporation
- Gipuzkoa Basket Club
- Global Business Coalition
- Goldey–Beacom College
- GothBoiClique
- Government Barisal College
- Granite Broadcasting
- Great Basin College
- Greater Baltimore Committee
- Greek Business Channel
- Green Building Council
- Guyana Broadcasting Corporation