| Abbreviation | Definition |
|---|---|
| UC | Ultra-Coated |
| UC | Un-Clutch |
| UC | Unified Coarse |
| UC | Universal Combo |
| UCM | User Customizable Model |
| UDM | Unpredictable Delay Machine |
| UDS | Utilized Distribution Substation |
| UE | Under Evaluation |
| UEC | Used Excellent Condition |
| UEQ | Uni-Wah Equalizer |
| UEU | Universal Exercise Unit |
| UF | Underground Feeder |
| UFFB | U Fight For Best |
| UFFI | Urea Formaldehyde Foam Insulation |
| UFG | Ultra Fine Grain |
| UFP | Universal Forest Products |
| UFQ | Unidades de Filtragem Química |
| UG | Ultra Gore |
| UGD | UTILITY GAS DRY filter |
| UGW | Utility Gas Wet filter separator |