A Unitarian is a follower of, or a member of an organisation that follows, any of several theologies referred to as Unitarianism:
Unitarianism (1565–present), a liberal Christian theological movement known for its belief in the unitary nature of God, and for its rejection of the doctrines of the Trinity, original sin, predestination, and of biblical inerrancy
Unitarian Universalism (often referring to themselves as "UUs" or "Unitarians"), a primarily North American liberal pluralistic religious movement that grew out of Unitarianism
Canadian Unitarian Council, an institution that joined the Unitarian Universalist Association in 1961 and left by agreement in 2002 to provide almost all equivalent services for Unitarian Universalists in Canada
Biblical Unitarianism, a scripture-fundamentalist non-Trinitarian movement (flourished c.1876-1929)
Nontrinitarianism, a generic name for a Christian point of view that rejects the Trinity doctrine
Other religious theologies
The English translation of the Arabic term موحدMuwaḥḥid (plural موحدونMuwaḥḥidūn), alternately meaning "monotheist", which may refer to:
The Almohad Caliphate, a dynasty and movement in the Maghreb and Al-Andalus
The endonym of the Druze people, a monotheistic ethnoreligious community, found primarily in Syria, Lebanon, Israel and Jordan
The self-description of many Salafi and Wahhabi groups
