| Abbreviation | Definition |
|---|---|
| UUT | Unit Under Test |
| UUV | Unmanned Undersea Vehicle |
| UUV | Unmanned Underwater Vehicle |
| UUW | Unlawful Use of a Weapon |
| UUW | Unlawful Use of Weapons |
| UUW | User Unit of Work |
| UV | Ultraviolet |
| UV | Underwater Vessel |
| UVA | Ulster volunteer force |
| UVA | UltraViolet A |
| UV-A | UltraViolet A |
| UV-B | Ultraviolet B |
| UVC | Ultra-Violet C (250-260nm) |
| UVCE | Unconfined Vapor Cloud Explosion |
| UVF | Ulster Volunteer Force |
| UVF | UltraViolet Filter |
| UVFB | Ucluelet Volunteer Fire Brigade |
| UVIS | Ultra-Violet, Visible, and Spectrographic Imagers |
| UVK | Ultra-VEAP Kicker |
| UVL | Ultra-Violet Lamp |