| Acronym | Definition |
|---|
| MTSMA➣Mountain to Sound Motorcycle Adventures (Issaquah, WA) |
| MTSMA➣Music Theory Society of the Mid-Atlantic |
| MTSMA➣Multi-city Transportation Systems Management Agency (California) |
| MTSMA➣Motoscafo da Turismo Silurante Modificato Allargato (Italian: Modified and Enlarged Tourism Torpedo Motorboat) |
| MTSMA➣Mt. Tabor School of Martial Arts |
| MTSMA➣Master of Theological Studies/Master of Arts |