| Abbreviation | Definition |
|---|---|
| GB | Gets Beaten |
| GBA | Glasgow Baseball Association |
| GBC | Game Boy Color |
| GBE | Game Boy Elite |
| GBF | Golf Ball Finder |
| GBG | Generic Board Game |
| GBG | Green Bay Gamblers (USHL) |
| GBM | Greenwich Borough Mariners |
| GBP | Game Boy Pocket |
| GBTP | Great British Tailgate Party |
| GC | Game Conference |
| GC | Game Coordinator |
| GC | Games Conference |
| GC | Golf Club |
| GC | Governor's Cup |
| GC | Grand Champion |
| GC | Guard Crush |
| GCAFAGC | Guide Dogs of America Foundation Annual Golf Classic |
| GCB | Gauteng Cricket Board |
| GCC | Golf Cart Conspiracy |