MTAA
| Acronym | Definition |
|---|---|
| MTAA | Motor Trades Association of Australia |
| MTAA | Medical Technology Association of Australia (North Sydney, New South Wales, Australia) |
| MTAA | Metropolitan Topeka Airport Authority (Kansas) |
| MTAA | Merthyr Tydfil Angling Association (Wales, UK) |
| MTAA | Massage Therapists Association of Alberta (Canada) |
| MTAA | Melanoma Tumor Associated Antigen (medicine) |