| Abbreviation | Definition |
|---|---|
| GDCR | Great Dock Canoe Race |
| GDTR | Gravity Defied Trial Racing |
| GEDS | Grace Episcopal Day School |
| GERCC | Gloucester Electric Racing Car Club |
| GFR | Global Formula Racing |
| GFTC | Global Food Traceability Center |
| GFTC | Global Food Traceability Centre |
| GGF | Grace Gospel Fellowship |
| GGR | Geta Grip Racing |
| GGR | Graham Goode Racing |
| GGSM | Grace Graduate School of Ministry |
| GHC | Grace Hopper Celebration |
| GHRC | Georgia Horse Racing Coalition |
| GIRA | Garden Isle Racing Association |
| GLITTER | GEMOC Laser ICPMS Total Trace Element Reduction |
| GLMRA | Great Lakes Multihull Racing Association |
| GLORY | Gay and Lesbian Organisation for Racing and Yachting |
| GLORY | Gay and Lesbian Organization for Racing and Yachting |
| GMAF | Grace Martial Arts Fellowship |
| GOC | Grace On Campus |