| Abbreviation | Definition |
|---|---|
| GAG | Goal A Game |
| GAG | Grab And Giggle |
| GAISF | General Association of International Sport Federations |
| GALS | Girls Athletic League Softball |
| GANG | Game Audio Network Guild |
| GAO | Going All Out |
| GAP | Games, Activities, and Puzzles |
| GAP | Gather And Play |
| GAP | Gets A Prize |
| GAP | Grade Adjusted Pace |
| GAPB | Great American Ball Park |
| GAS | Games And Sports |
| GAS | Gear Acquisition Syndrome |
| GAS | Ghetto All Stars |
| GASA | Georgia Amateur Soccer Association |
| GASP | Great American Sports People |
| GASP | Grip Aim Strike Posture |
| GASP | Grip, Alignment, Stance, And Posture |
| GB | Game Boy |
| GB | Games Behind |