| Acronym | Definition |
|---|
| GMHA➣Guam Memorial Hospital Authority |
| GMHA➣Green Mountain Horse Association |
| GMHA➣Georgia Manufactured Housing Association |
| GMHA➣Greene Metropolitan Housing Authority |
| GMHA➣Georgetown Minor Hockey Association (Ontario, Canada) |
| GMHA➣Geauga Metropolitan Housing Authority (Ohio) |
| GMHA➣Guelph Minor Hockey Association (Canada) |
| GMHA➣Geriatric Mental Health Alliance |
| GMHA➣Georgina Minor Hockey Association (Ontario, Canada) |
| GMHA➣Greater Milford Health Alliance |
| GMHA➣Grand Master Hiram Abif |
| GMHA➣Grand Manan Harbour Authority |
| GMHA➣Greenwood Minor Hockey Association (Canada) |