| Abbreviation | Definition |
|---|---|
| REW | Rewind |
| REXREP | Radar Exploitation Report |
| REZ | Resolution |
| RF | CM Radio Frequency Countermeasures |
| RF | Radio Frequency |
| RF | RangeFinder |
| RF | Request For |
| RF | Reserve Force |
| RF | Response Force |
| RF | Retention Factor |
| RF | Retention Fraction |
| RF | Right Front |
| RF/EMPINT | Radio Frequency/electromagnetic Pulse Intelligence |
| RF/SAL | Radio-Frequency Semi-Active Laser |
| RF-84F | Republic FICON reconnaissance fighter |
| RFA | Radio Frequency Authorization |
| RFA | Ready For Action |
| RFA | Request For Acknowledgment |
| RFA | Request For Applications |
| RFA | Request For Assistance |