 |  | U
|  |
 | 2801 | UAM |  |
 | 2331 | UC |  |
 | 2331 | UCA |  |
 | 2238 | Ukrainian Autocephalic Orthodox Church |  |
 | 2074 | Ukrainian Catholic |  |
 | 2238 | Ukrainian Orthodox |  |
 | 2238 | Ukrainian Orthodox Church |  |
 | 6171 | Unaffiliated Spiritualist Groups |  |
 | 0002 | Unaligned |  |
 | 7010 | Unbeliever |  |
 | 0003 | Uncertain |  |
 | 0003 | Undecided |  |
 | 2000 | Undenominational Christian |  |
 | 2000 | Undenominational, nai |  |
 | 2071 | Uniat |  |
 | 2071 | Uniate |  |
 | 6999 | Unification Church (Moonies) |  |
 | 2331 | Union Church |  |
 | 2999 | Union Church of Hong Kong |  |
 | 2331 | Union Methodist |  |
 | 2914 | Unitarian |  |
 | 2914 | Unitarian Church |  |
 | 7013 | Unitarian Humanist |  |
 | 2801 | United Aboriginal Ministries (UAM) |  |
 | 2801 | United Aborigines Mission |  |
 | 2051 | United Brethren |  |
 | 2899 | United Christian Fellowship |  |
 | 2331 | United Church |  |
 | 2331 | United Church of Australia |  |
 | 2331 | United Church of Canada |  |
 | 2999 | United Church of God |  |
 | 2331 | United Church of Papua New Guinea and the Solomons |  |
 | 2911 | United Church of Religious Science |  |
 | 2806 | United Church of Tonga |  |
 | 2805 | United Congregationist |  |
 | 2171 | United Evangelical Lutheran Church in Australia |  |
 | 2807 | United Evangelical, nai |  |
 | 2251 | United Free Church (of Scotland) |  |
 | 2251 | United High Free Church of Scotland |  |
 | 2331 | United Methodist Church |  |
 | 2331 | United Methodist Free Church |  |
 | 2899 | United Mission Churches of Australia |  |
 | 2999 | United Parish |  |
 | 2415 | United Pentecostal |  |
 | 2415 | United Pentecostal Church of Australia |  |
 | 2251 | United Presbyterian Church |  |
 | 2331 | United Protestant Church |  |
 | 2999 | United School of Christianity |  |
 | 6171 | United Spiritualism in Australia |  |
 | 2999 | United Truth Church |  |
 | 2238 | United Ukrainian Autocephalic Orthodox Church |  |
 | 2331 | Uniting Church |  |
 | 2331 | Uniting Church of Australia |  |
 | 2331 | Uniting Welsh Chapel Church |  |
 | 2331 | Uniting, nai |  |
 | 2911 | Unity |  |
 | 2911 | Unity Church |  |
 | 2911 | Unity of Australia |  |
 | 2911 | Unity School of Christianity |  |
 | 6999 | Universal Brotherhood of Faithists |  |
 | 2999 | Universal Catholic |  |
 | 2915 | Universal Church (of God) |  |
 | 2499 | Universal World Church |  |
 | 2914 | Universalist |  |
 | 0002 | Universal, nai |  |
 | 0003 | Unknown |  |
 | 2999 | Unnamed Christian |  |
 | 2999 | Unorthodox Christian |  |
 | 2000 | Unsectarian Christian |  |
 | 2000 | Unsectarian, nai |  |
 | 3011 | Upanishadic (Post-Vedic) |  |
 | 2415 | UPC |  |
 | 6999 | Urantia Book Study Groups |  |