| Abbreviation | Definition |
|---|---|
| UCCC | United Christian Community Church |
| UCCF | Universities and Colleges Christian Fellowship |
| UCCFS | United Council of Christian Fraternities and Sororities |
| UCCKE | United Christian College Kowloon East |
| UCCL | United Christian Churches League |
| UCCR | United Camps Conferences Retreats |
| UCE | Unitarian Church of Edmonton |
| UCF | United Christian Foundation |
| UCF | University Christian Fellowship |
| UCFA | University Catholic Federation Australia |
| UCG | United Christian Giving |
| UCG | United Church of God |
| UCG | Universidade Católica de Goiás |
| UCG-B | United Church of God - Bakersfield |
| UCG-E | United Church of God - Edmonton |
| UCGIA | United Church of God International Association |
| UCG-L | United Church of God - Lafayette, Indiana |
| UCG-M | United Church of God - Milwaukee |
| UCGRRC | United Church of God Race Relations Committee |
| UCG-S | United Church of God - Sacramento, California |