| Acronym | Definition |
|---|
| RMCS➣Royal Military College of Science |
| RMCS➣Rocky Mountain Challenge Series (automobile race; Boise, ID) |
| RMCS➣Richmond Multicultural Concerns Society (Richmond, British Columbia, Canada) |
| RMCS➣Red Meat Construction Set (comics) |
| RMCS➣Radio Model Club Sénonais (French radio controlled car club) |
| RMCS➣Radioman, Senior Chief |
| RMCS➣Range Monitoring Control System |