Assujettir
- Unitarian Universalist Association1
- United Brethren Church1
- United Church of Canada1
- United Church of Christ. Illinois Conference1
- United Methodist Church (U.S.). General Council on Ministries1
- United Methodist Church (U.S.). Troy Conference1
- United Methodist Church (U.S.). Virginia Conference1
- United Methodist Church (U.S.). West Virginia Conference1
- United Methodist Church--Baltimore-Washington Conference1
- United Methodist Church--Discipline1
- United Methodist Church--Liturgics1
- United Methodist Church--Membership1
- United Methodist Church--Southern New England Conference1
- United Methodist Church--Women1
- United States1
- United States Conference of Mennonite Brethren Churches1
- Uniting Church in Australia1
- Universities and colleges1
- Urban Churches1
- Urbanization--Religious aspects1