| Abbreviation | Definition |
|---|---|
| GCAA | Georgia Collegiate Athletic Association |
| GCAA | Georgia Community Action Association |
| GCAA | Georgia Construction Aggregate Association |
| GCAA | Golf Coaches Association of America |
| GCAA | Greater Charlotte Apartment Association |
| GCAD | Gujarati Cultural Association of Darwin |
| GCAP | Gujarati Cultural Association of the Piedmont |
| GCAR | Greater Capital Association of REALTORS |
| GCAR | Greater Chattanooga Association of Realtors |
| GCAR | Gulf Coast Association of REALTORS |
| GCBA | General Council of Burmese Associations |
| GCBA | Genesee County Bar Association |
| GCBA | Gloucestershire County Bridge Association |
| GCBA | Gold Canyon Business Association |
| GCBA | Gold Coast Builders Association |
| GCBA | Gold Country Brewers Association |
| GCBA | Greater China Business Association |
| GCBA | Greater Cleveland Beekeepers Association |
| GCBA | Greater Cleveland Boating Association |
| GCBA | Green Country Bluegrass Association |