| Abbreviation | Definition |
|---|---|
| URF | Uniform Reporting Format |
| URF | United Rebel Forces |
| URI | University Research Initiative |
| URL | Unfinanced Requirements List |
| URM | Unit Release Method |
| URO | User Readout |
| URO | Utilization Review Organization |
| URP | User Review Panel |
| URPA | User Review Panel Assessment |
| URR | UHF Radio Receiver |
| URR | Un- Resourced Requirement |
| URR | Unconstrained Requirements Report |
| URR(s) | Utilization Rate Ratio(s) |
| URS | Unit Reference Sheet |
| URS | User Requirement Study |
| URT | User Requirements Testing |
| URU | Universal Research Unit |
| URV | Unit Risk Value |
| US | Uniform System |
| US | United States |