| Abbreviation | Definition |
|---|---|
| UBJ | Under the Blood of Jesus |
| UBM | United Beach Missions |
| UBM | United Board of Missions |
| UBMC | United Baptist Missionary Convention |
| UBN | Unity Broadcasting Network |
| UBRN | Union of Brazilian Religious Nurses |
| UBS | United Bible Socities |
| UBTJ | You turn Back To Jesus |
| UBU | Us Baptists United |
| UBY | Upward Bound Youth |
| UCA | United Christian Academy |
| UCAN | United Christians At Nelson |
| UCB | United Christian Broadcasters |
| UCBC | Urban Community Baptist Church |
| UCC | Unitarians Considering Christ |
| UCC | Unitarians Craving Christ |
| UCC | United Church of Canada |
| UCC | United Church of Canada (largest protestant denomination in Can.) |
| UCC | United Church Of Christ |
| UCC | United Congregational Church |