| Abbreviation | Definition |
|---|---|
| FYSC | Fernhill Youngsters Sports Club |
| GAAC | German American Automobile Club |
| GAC | Guardian Angel Club |
| GACC | Gateway Area Chevelle Club |
| GACH | Gooise Atletiek Club Hilversum |
| GAMC | Greater Akron Motorcycle Club |
| GARC | Gadsden Amateur Radio Club |
| GARC | Garland Amateur Radio Club |
| GARC | Gator Amateur Radio Club |
| GARC | Goddard Amateur Radio Club |
| GARC | Goddard Amatuer Radio Club |
| GARC | Grant Amateur Radio Club |
| GASBC | Green All Sports Booster Club |
| GASC | German American Social Club |
| GATC | Georgia Appalachian Trail Club |
| GATC | Greenwood Athletic and Tennis Club |
| GAVC | Georgia Adrenaline Volleyball Club |
| GAWC | German-American Women's Club |
| GAYC | Gulf Atlantic Yacht Club |
| GBAC | Greater Birmingham Auburn Club |