| Abbreviation | Definition |
|---|---|
| GP | Grand Prix |
| GP | Grand Prize |
| GP | Guest Pass |
| GPA | Good Point Assessment |
| GPG | Game Programming Galaxy |
| GPL | Grand Prix Legends |
| GPR | Grand Prix Replica |
| GPRO | Grand Prix Racing Online |
| GPSA | Grande Prairie Soccer Association |
| GPSA | Grosse Pointe Soccer Association |
| GPSC | Grosse Pointe Sail Club |
| GPSD | Greater Portland Soccer District |
| GPWC | Grand Prix World Championship |
| GQS | Global Quality Sports |
| GR | Game Results |
| GR | Guard Reversal |
| GRA | Girls Riding Association |
| GRA | Girls Rodeo Association |
| GRA | Gravity Racers Association |
| GRA | Greyhound Racers Association |