| Abbreviation | Definition |
|---|---|
| ROS | Rosman, North Carolina, Spaceflight Tracking Data Network station |
| ROSAT | ROentgen SATellite |
| ROSES | Research Opportunities in Space and Earth Sciences |
| ROT | Remaining Operating Time |
| ROT | Rota, Spain |
| ROT | Rotate, Rotation |
| ROTI | Recording Optical Tracking Instrument |
| ROTO | Roll-Out and Turn-Off |
| ROUT | Rollout |
| ROZ | Restricted Operations Zone |
| RP | Reaction Plane |
| RP | Relative Pressure |
| RP | Repair Period |
| RP | Rocket Propellant |
| RP | Rotating Platform |
| RPA | Record and Playback Assembly |
| RPA | Request for Procurement Action (Authorization) |
| RPC | Remote Power Controller |
| RPE | Reliability Project Engineer |
| RPIE | Real Property Installed |