| Abbreviation | Definition |
|---|---|
| RMA | Return Merchandise Authorisation |
| RMA | Return to Manufacturer Authorisation |
| RMA | Richmond Metropolitan Authority |
| RMA | Robert Morris Associates |
| RMA | Robust Multi array |
| RMA | Rocky Mountain APPA |
| RMA | Roughness Metallic Ambient |
| RMA | Russian Martial Art |
| RMAF | Retired Missionary Aid Fund |
| RMAF | Rocky Mountain Association of Fairs |
| RMAF | Rocky Mountain Audio Fest |
| RMAF | Royal Malaysian Air Force |
| RMAFC | Rician Multiple Access Fading Channel |
| RMAR | Rape Murder Arson and Rape |
| RMAR | Red Mountain Action Rifle |
| RMAR | Rocky Mountain Adventure Rentals |
| RMAR | Rocky Mountain Adventure Riders |
| RMAR | Rocky Mountain Association of Recruiters |
| RMAS | Rape Myth Acceptance Scale |
| RMAS | Reactivity Measurement and Analysis System |