| Abbreviation | Definition |
|---|---|
| RR | Range Rate |
| RR | Rendezvous Radar |
| RR | Respiration Rate |
| RRAD | Roll Rate Anomaly Detection |
| RRDA | Rendezvous, Retrieval, Docking, and Assembly |
| RREA | Rendezvous Radar Electronics Assembly |
| RREU | Rendezvous Radar Electronics Unit |
| RRF | Resource Recovery Facility |
| RRI | Rendezvous Radar Indicator |
| RRL | Rudder Reference Line |
| RRO | Regional Reliability Organization |
| RRP | Rudder Reference Plane |
| RRR | Risk Reduction Review |
| RRT | Rendezvous Radar Transducer |
| RRT | Rendezvous Radar Transponder |
| RS | Rawinsonde |
| RS | Redundancy Status |
| RS | Redundant Set |
| RS | Reed Solomon |
| RS | Refurbishment Spare |