| Acronym | Definition |
|---|
| OTMA➣Oakland Transportation Management Association (Pittsburgh, PA) |
| OTMA➣Open Transaction Manager Access |
| OTMA➣On the Move Accessibility (backpacking; Original Mountain Marathon) |
| OTMA➣Olga, Tatiana, Marie, Anastasia (Romanov grand duchesses) |
| OTMA➣One Tree Martial Arts (Eau Claire, WI) |
| OTMA➣Office Technology Management Association |