| Abbreviation | Definition |
|---|---|
| RSI | Reusable Surface Insulation |
| RSL | Received Signal Level |
| RSL | Resource Support List |
| RSLS | Redundant Set Launch Sequencer |
| RSLV | Resolve |
| RSM | Resume |
| RSM | Rubber Sealant Membrane |
| RSMM | Redundant System Monitor Model |
| RSO | Radiological Safety Office |
| RSP | Rendezvous Station Panel |
| RSS | Range Safety Switch |
| RSS | Range Safety System |
| RSS | Reactants Supply System |
| RSS | Rib Structure Station |
| RSS | Robotic Servicer System |
| RSS | Root Sum Square |
| RSS | Rotating Service Structure |
| RSSPO | Resident Space Shuttle Project Officer |
| RST | Recessed Selectromatic Terminal |
| RST | Requirements Synthesis Team |