| Abbreviation | Definition |
|---|---|
| RESIS | Resistance |
| RESP | Responsibility |
| RESVR | Reservoir |
| RET | Retract |
| RETEN | Retention |
| RETRO | Retro Controller (NASA) |
| RETRO | Retrofire |
| RETRO | Retrofire Officer |
| RETRV | Retrieve |
| RETS | Reconfigurable Electrical Test Stand |
| RETS | Reconfiguration Electrical Test Stand |
| REV | Reverse |
| REV | Revision |
| RF | Communications Support |
| RF | Retardation Factor |
| RF | Right Forward |
| RFA | Request for Action |
| RFA | RF Authorization (Frequency) |
| RFB | Ready for Baseline |
| RFB | Request for Bid |