| Acronym | Definition |
|---|
| GMTA | Great Minds Think Alike |
| GMTA | Galicia Maxica Trail Adventure (Galicia, Spain) |
| GMTA | Georgia Motor Trucking Association |
| GMTA | Georgia Music Teachers Association |
| GMTA | German Medical Technology Alliance |
| GMTA | Guam Mass Transit Authority |
| GMTA | Greenfield Montague Transportation Area |
| GMTA | Green Mountain Transit Agency (Vermont) |
| GMTA | Global Mean Temperature Anomaly |
| GMTA | Gainesville Music Teachers Association |
| GMTA | Gloucester Music Teachers Association |
| GMTA | Goals-Means Task Analysis |
| GMTA | Greater Madison Tennis Association (Wisconsin) |
| GMTA | Greenwich Musical Theatre Academy (UK) |
| GMTA | Greater Metropolitan Toronto Area |
| GMTA | General Motors Technical Academy |
| GMTA | Grand Manan Tourism Association |
| GMTA | Give Me the Answer |
| GMTA | Group Mortgage Term Assurance |
| GMTA | Genetically Modified Total Annihilation (game) |
| GMTA | Graduate Merit Tuition Awards |