| Abbreviation | Definition |
|---|---|
| UVU | Union Veterans Union |
| UVW | Ultra-Violet Wavelength |
| UW | Unconventional Warfare |
| UW | UnderWater |
| UW | Unseen Warriors |
| UW | Unterwasser Waffenschule |
| UWAL | University of Washington Aeronautical Laboratory |
| UWB | Ultra Wide-Band |
| UWC | UnderWater Camera |
| UWC | Underwater Communication System |
| UWC | Universal Weapons Carrier |
| UWD | Undersea Weapon Design |
| UWD&O | Undersea Weapon Design and Optimization |
| UWDO | Undersea Weapon Design and Optimization |
| UWE | Unlimited Weather Exposure |
| UWG | User Working Group |
| UWI | Un-Written Instruction |
| UWISL | USAREUR WWMCCS Information System Location |
| UWK | UnderWater Knife |
| UWM | UnderWater Mission |