Unitarian Universalism is a liberal religion characterized by a “free and responsible search for truth and meaning”. The Unitarian Universalist (UU) Church does not have a creed. Instead UUs are unified by their shared search for spiritual growth. As such, UU congregations include many agnostics, theists, and atheists among their membership. The roots of UU are in liberal Christianity, specifically Unitarianism and Universalism. Unitarian Universalists state that from these traditions comes a deep regard for intellectual freedom and inclusive love, so that congregations and members seek inspiration and derive insight from all major world religions.

The Unitarian Universalist Association (UUA) was formed in 1961, a consolidation of the American Unitarian Association, established in 1825, and the Universalist Church of America, established in 1793. It is headquartered in Boston, Massachusetts, and serves churches mostly in the United States. A group of thirty Philippine congregations is represented as a sole member within the UUA. The Canadian Unitarian Council (CUC) became an independent body in 2002. The UUA and CUC are, in turn, two of the seventeen members of the International Council of Unitarians and Universalists.