| Abbreviation | Definition |
|---|---|
| RQW | Rescue Wing |
| RR | Readiness Review |
| RR | Reattack Recommendation |
| RR | Rebel Rocket |
| RR | Recruitment and Retention |
| RR | Reference Range |
| RR | Reference Receiver |
| RR | Refit and Repair |
| RR | Relevant Rank |
| RR | Reporting Responsibility |
| RR | Requirements Review |
| RR | River Rats |
| RR | Rough Riders |
| RR | Rounds Remaining |
| RR | Royal Ranger |
| RR&D | Reparation, Removal, and Demolition Section, U. S. Military Government, Germany |
| RRA | Rahanweyn Resistance Army |
| RRA | Rock River Arsenal |
| RRAD | Red River Army Depot |
| RRB | Radar Range Bearing |