| Acronym | Definition |
|---|
| GTMA➣Greater Toronto Marketing Alliance (Canada) |
| GTMA➣Gauge and Toolmakers Association (UK) |
| GTMA➣Great Minds Think Alike |
| GTMA➣Getting the Message Across (UK communications firm) |
| GTMA➣German Trademark Act |
| GTMA➣Grid Trade Master Agreement |
| GTMA➣Georgia Textile Manufacturers Association |
| GTMA➣Gauteng Transport Management Authority (South Africa) |
| GTMA➣Garment and Textile Manufacturers Association (Malawi) |
| GTMA➣Georgia Transfer to Minors Act |
| GTMA➣Green Throated Mango A (A. viridigula) |
| GTMA➣Gas Turbine Materials Associates, Inc. |
| GTMA➣Glendale Transportation Management Association (California) |