| Abbreviation | Definition |
|---|---|
| GCBA | Greenfield Community and Business Association |
| GCBA | Gulf Coast Blacksmith Association |
| GCBA | Gwinnett County Bar Association |
| GCCA | Georgia Child Care Association |
| GCCA | Georgia College Counseling Association |
| GCCA | Global Cleantech Cluster Association |
| GCCA | Greater Chicago Cichlid Association |
| GCDA | Gold Coast Dressage Association |
| GCEA | Greater Cincinnati Electrical Association |
| GCEA | Gunnison County Electric Association |
| GCHA | Garden City Hockey Association |
| GCHA | Grand County Historical Association |
| GCHA | Greater Chattanooga Hospitality Association |
| GCHA | Green Country Healthcare Association |
| GCHA | Gulf Coast Heritage Association |
| GCMA | Gold Coast Medical Association |
| GCMA | Golf Club Managers Association |
| GCNA | Gloucestershire County Netball Association |
| GCNA | Gold Coast Neighbors Association |
| GCNA | Golden City Netball Association |