| Abbreviation | Definition |
|---|---|
| RSO | Regional Support Organization |
| RSOC | Regional Signals Intelligence (SIGINT) Operations Center |
| RSOI | Reception, Staging, Onward movement, and Integration |
| RSOP | Reconnaissance, Selection, and Occupation of Position |
| RSP | Ration Supply Point |
| RSP | Recognized Surface Picture |
| RSP | Red Switch Project (DOD) |
| RSP | Religious Support Plan |
| RSP | Religious Support Policy |
| RSP | Render Safe Procedure |
| RSPA | Research and Special Projects Administration |
| RSPL | Recommended Spare Parts List |
| RSR | Readiness Status Report |
| RSR | Required Supply Rate |
| RSRE | Royal Signals and Radar Establishment, England |
| RSS | Radio Subsystem |
| RSS | Ready For Selfless Service |
| RSS | Remote Sensors Subsystem |
| RSS | Remote Site Subsystem |
| RSS | Remote Slave Station |