| Acronym | Definition |
|---|
| OMRA➣Other Medicare Required Assessment (US DHHS) |
| OMRA➣Oregon Motorcycle Riders Association |
| OMRA➣Offshore Model Racing Association (UK model boat racing club) |
| OMRA➣Outer Mission Residents Association (San Francisco, CA) |
| OMRA➣Optimal Matrix Rational Approximation |
| OMRA➣Oriental Medicine Research Advancement |