| Acronym | Definition |
|---|
| GBAC➣Greater Birmingham Auburn Club (Alabama) |
| GBAC➣Governance-Based Access Control (Canada) |
| GBAC➣Greater Boston Anthropology Consortium (Massachusetts) |
| GBAC➣Green Building Advisory Council (Washington, DC) |
| GBAC➣Goose Bay Airport Corporation (Canada) |
| GBAC➣Great Beach Attractions Corporation |
| GBAC➣Greater Baldwinsville Ambulance Corps (est. 1962; Baldwinsville, NY) |
| GBAC➣Golden Bull Activities Committee (Johnson C. Smith University; Charlotte, NC) |