| Acronym | Definition |
|---|
| GBCA | Green Building Council of Australia |
| GBCA | Gadolinium-Based Contrast Agent |
| GBCA | General Building Contractors Association |
| GBCA | Greater Baltimore Cultural Alliance (Maryland) |
| GBCA | Galveston Bay Cruising Association |
| GBCA | Greater Boston Concierge Association |
| GBCA | Grassland Bird Conservation Area |
| GBCA | Grizzly Bear Conservation Area |
| GBCA | Graphics-Based Control Architecture |
| GBCA | Greater Boston Cable Advertising |
| GBCA | Granite Bay Community Association (Granite Bay, CA) |
| GBCA | German Brown Coal Association |
| GBCA | Great Band of Christmas Aid |