| Abbreviation | Definition |
|---|---|
| RMG | Right Main Gear |
| RMI | Radio Magnetic Indicator |
| RMO | Resident Manager's Office |
| RMP | Risk Management Program |
| RMRS | Repeatable Maintenance and Recall System |
| RMS | Radian Means per Second |
| RMS | Random Motion Simulator |
| RMS | Redundancy Management System |
| RMS | Reliability, Maintainability, and Safety |
| RMS | Remote Manipulator System (Subsystem) |
| RMS | Risk Management and Safety |
| RMS | Root-Mean-Square |
| RMSA | Rocket Motor Staging Area |
| RMSVP | Remote Manipulator Subsystem Verification Plan |
| RMT | Remote |
| RMW | Roll Maneuver Wheels |
| RN | Radius of Neptune |
| RN | Reynolds Number |
| RNDZ | Rendezvous |
| RNG | Range |