| Acronym | Definition |
|---|
| RMSP | Região Metropolitana de São Paulo (Portuguese: São Paulo Metropolitan Region; Brazil) |
| RMSP | Rocky Mountain School of Photography (Missoula, MT) |
| RMSP | Republican Main Street Partnership (Washington, DC) |
| RMSP | Royal Mail Steam Packet (ship) |
| RMSP | Roan Mountain State Park (Tennessee) |
| RMSP | Robert Moses State Park (Long Island, New York) |
| RMSP | Retiree Medical Savings Plan (Midwest Operating Engineers Retiree Welfare Plan) |
| RMSP | Rural Medical Scholars Program (University of Alabama) |
| RMSP | Risk Management Service Provider |
| RMSP | Resources & Mission Sponsor Plan |
| RMSP | Relative Market Share Position |