| Abbreviation | Definition |
|---|---|
| UAV | Unmanned Aerospace Vehicle |
| UAV | Urban Assault Vehicle |
| UAV-C | Unmanned Aerial Vehicle - Close Range |
| UAV-CGSC | Unmanned Aerial Vehicle - Close Range - Ground Control Station |
| UAV-CR | Unmanned Aerial Vehicle - Close Range |
| UAV-E | Unmanned Aerial Vehicle - Endurance |
| UAV-GCS | Unmanned Aerial Vehicle - Ground Control Station |
| UAV-MPCS | Unmanned Aerial Vehicle - Mission Planning and Control Station |
| UAV-MR | Unmanned Aerial Vehicle - Medium Range |
| UAV-SR | Unmanned Aerial Vehicle - Short Range |
| UB | Uniform Bill |
| UB1 | Universal Barrel mount Type 1 |
| UBA | United Baloch Army |
| UBACS | Under Body Armour Combat Shirt |
| UBD | U Be Dead |
| UBD | User Brain Damage |
| UBGL | Under-Barrel Grenade Launcher |
| UBL | Unit Basic Load |
| UBM | Unified Battlescale Model |
| UBM | Universal Barrel Mount |