| Abbreviation | Definition |
|---|---|
| UHF-FM | Ultra-High Frequency - Frequency Modulation |
| UHI | Ultra- High Intensity |
| UHLCADS | Ultra-High Level Container Airdrop System |
| UHO | Unit Historian |
| UHP | Ultra- High Power |
| UHP | Ultra High Pressure |
| UHP | Ultra-High Purity |
| UHQ | Unit HeadQuarters |
| UHR | Ultra- High Reliability |
| UHSL | Universal Homeland Security Links |
| UHTS | Universal Hydraulic Test Stand |
| UHV | Upper Huallaga Valley |
| UI | Unit of Issue |
| UIC | Unified INFOSEC Criteria |
| UIC | Unit Identification Code |
| UICIO | Unit Identification Code Information Officer |
| UIE | User Interface Engineering |
| UIF | Unserviceable Items File |
| UIFG | User Interface Functional Group |
| UIG | Utility Industry Group |