| Abbreviation | Definition |
|---|---|
| UDV | Uniao Do Vegetal (Union of Vegetation) |
| UE | Unity Of Empire |
| UEC | Union of Evangelical Churches |
| UEC | University Episcopal Center |
| UEG | Unknown Evil God |
| UEJ | Unánimes En Jesús |
| UEJF | Union des étudiants juifs de France |
| UELC | United Evangelical Lutheran Church |
| UEM | United Evangelical Mission |
| UESI | union of evangelical students of India |
| UFA | Unreal Fallin Angel |
| UFC | United Family in Christ |
| UFC | United For Christ |
| UFM | University Friends Meeting ( Quakers) |
| UFP | Universal Federation of Pagans |
| UFQ | United Federation of Quakers |
| UGLY | U Gotta Love Yourself |
| UGM | Union Gospel Mission |
| UGO | Ultimate God Oasis |
| UHG | Universal Hope Group |