| Abbreviation | Definition |
|---|---|
| RMSF | Root Mean Square Fluctuation |
| RMSF | Root Mean Squared Fluctuation |
| RMSH | Reliability Maintainability Safety Human |
| RMSH | Rocky Mount Senior High |
| RMSH | Root Mean Square Heights |
| RMSH | Ross Milbourne Sports Hall |
| RMSI | Reclaimed Mine Soil Index |
| RMSI | Residual Mass Severity Index |
| RMSI | Richmond Main Street Initiative |
| RMSMS | Rhombo Medical Sensor Mess System |
| RMSO | Rock My Socks Off |
| RMSO | Rocky Mountain Sasquatch Organization |
| RMSP | Motor Starter Protectors |
| RMSP | Radiation Machine Service Providers |
| RMSP | Região Metropolitana de São Paulo |
| RMSP | Retiree Medical Savings Plan |
| RMSP | Rocky Mountain Scholars Program |
| RMSP | Rocky Mountain Stone Products |
| RMSP | Rocky Mountain Super Pass |
| RMSP | Royal Mail Steam Packet |