| Abbreviation | Definition |
|---|---|
| GDOT | Georgia Department Of Transportation |
| GDP | Ground Delay Program |
| GEG | Spokane International Airport |
| GEM | Global Electric Motorcar |
| GER | Great East Road |
| GERV | General Electric Research Vehicle |
| GES | General Estimates System |
| GF | Gasoline Fuel |
| GFF | Gravity Fuel Feed |
| GFG | Global Freight Group |
| GFIA | Gerald Ford International Airport, Grand Rapids, Michigan |
| GFIA | Great Falls International Airport |
| GFT | Global Freight Transit |
| GFV | Gaseous Fuelled Vehicles |
| GG | Galloping Gondola |
| GGAT | Greatest Generation Accessible Transportation |
| GGE | Gasoline Gallon Equivalent |
| GHTS | Grain Handing and Transportation System |
| GHTS | Grain Handling and Transportation System |
| GI | Geographic Information |