| Abbreviation | Definition |
|---|---|
| GAAP | General Aviation Aerodrome Procedures |
| GAAP | General Aviation Airport Procedures |
| GAAP | Generally Accepted Accounting Principles |
| GADO | General Aviation District Office |
| GAF | Guaranteed Air Freight |
| GAG | Go Around Ground |
| GAIT | Green Accessible Intelligent Transportation |
| GALRO | General Aviation Licensing & Registration On-line |
| GAP | Guaranteed Auto Protection |
| GARF | Go Anywhere Really Fast |
| GART | Groupement des Autorités Responsables de Transport |
| GARV | Grant Anticipated Revenue Vehicle |
| GAS | Get Away Special |
| GAT | General Air Traffic |
| GATA | Get A Taxi Anywhere |
| GATE | General Aviation Telephonic Entry |
| GATN | Greek Air Taxi Network |
| GAV | Ground Attack Vehicle |
| GBC | Guidance, Balance, And Connections |
| GBF/DIME | Geographic Base File / Dual Independent Map Encoding |