| Abbreviation | Definition |
|---|---|
| UEP | Unequal Error Protection |
| UER | Uncorrected ERror |
| UER | User Experience Research |
| UERG | User Experience Research Group |
| UF | User Friendly |
| UFN | Unambiguous File Name |
| UFO | Unidentified Function Object |
| UFR | Ultra Fast Rendering |
| UFS | Unix File System |
| UFS | User File System |
| UFST | Universal Font Scaling Technology |
| UG | User Group |
| UG | Users Group |
| UG | User's Guide |
| UGC | Uppsala General Catalogue |
| UGE | Unidentified Genetic Expression |
| UGHS | University General Health System |
| UGL | User Group Lounge |
| UGT | Union General de Trabajadores |
| UGTT | Union Generale des Travailleurs Tunisiens |