| Acronym | Definition |
|---|
| GBMA➣Gypsum Board Manufacturers of Autralasia (Australia and New Zealand) |
| GBMA➣Greater Blue Mountains Area (Australia) |
| GBMA➣Gettysburg Battlefield Memorial Association (est. 1864; Gettysburg, PA) |
| GBMA➣Grizzly Bear Management Area (various locations) |
| GBMA➣Greater Boston Metropolitan Area (Massachusetts) |
| GBMA➣Gaussian Beam Mode Analysis |