| Acronym | Definition |
|---|
| GCAA | General Civil Aviation Authority (United Arab Emirates) |
| GCAA | Ghana Civil Aviation Authority |
| GCAA | Golf Coaches Association of America |
| GCAA | Guyana Civil Aviation Authority |
| GCAA | Galveston County Apartment Association |
| GCAA | Graduate Careers Council of Australia |
| GCAA | Gambia Civil Aviation Authority |
| GCAA | Gulf Coast Angler's Association |
| GCAA | Georgia Christian Athletic Association |
| GCAA | Governor’s Community Achievement Award |
| GCAA | Green Citizens' Action Alliance |
| GCAA | Gauteng Combined Accommodation Association |
| GCAA | Garden City Athletic Association |
| GCAA | Guelph Creative Arts Association |
| GCAA | Georgia Community Action Association |
| GCAA | Glaucoma Crónico de Ángulo Abierto |
| GCAA | Greater China Accountants Alliance |
| GCAA | Greater Cleveland Auto Auction |
| GCAA | Girard College Alumni Association |
| GCAA | Greater Chicago Auto Auction |
| GCAA | Greater Cleveland Alumni Association |
| GCAA | Gallaudet College Alumni Association |
| GCAA | Georgia Common Access Application |
| GCAA | Gilpin County Art Association |
| GCAA | Gates Chili Alumni Association |
| GCAA | Génie Chimique et Agro-Alimentaire |
| GCAA | General Committee on Academic Affairs |
| GCAA | Global Collegiate Athletics Association |
| GCAA | Gwasanaethau Cefnogi ac Arolygu Addysg |
| GCAA | Greater Cincinnati Alumnae Association |
| GCAA | Grayville Community Arts Association |
| GCAA | Graduate Committee on Admissions and Awards |
| GCAA | Grand Canyon Airport Authority |
| GCAA | Golden Casket Agents Association |
| GCAA | Gilmer County Athletic Association |
| GCAA | Georgetown College Alumni Association |
| GCAA | German Council on Alcoholism and Addictions |
| GCAA | Galveston College Alumni Association |
| GCAA | Ghanaian Canadian Achievement Awards |
| GCAA | Golden Cedar Association of Australia |
