| Rank | Abbreviation | Meaning |
|---|
| ***** | GACA | General Administration of Civil Aviation
| |
| ***** | GACA | Georgia Athletic Coaches Association
| |
| ***** | GACA | General Authority of Civil Aviation
| |
| ***** | GACA | Gainesville Association for the Creative Arts
| |
| ***** | GACA | German American Citizens Association
| |
| **** | GACA | Gaylord Area Council for the Arts
| |
| **** | GACA | Grupo de Artillería de Campaña Autopropulsada
| |
| **** | GACA | Georgia Animal Control Association
| |
| **** | GACA | Gallery of American Cue Art
| |
| **** | GACA | Geriatric Academic Career Award
| |
| **** | GACA | Government Aid Coordinating Agencies
| |
| *** | GACA | General Accident Plc (London Stock Exchange [LSE])
| |
| *** | GACA | General Administration of Civil Administration
| |
| *** | GACA | Georgia Addiction Counselors Association
| |
| *** | GACA | Government Acknowledgment and Consent Agreement
| |
| *** | GACA | Great Ape Conservation Act
| |
| *** | GACA | Georgia Athletic Coaches Association's
| |
| *** | GACA | Greater Austin Creative Alliance
| |
| ** | GACA | Glanmire Area Community Association
| |
| ** | GACA | Generic Agricultural Chemical Association
| |
| ** | GACA | Girard Alliance Christian Academy
| |
| ** | GACA | Governor's Advisory Council on Aging
| |
| ** | GACA | Governmental Agency Compensation Adjustment
| |
| ** | GACA | Greater Alton Concert Association
| |
| * | GACA | Greater Accokeek Civic Association
| |