Unitarian

Unitarian or Unitarianism may refer to:

Christian and Christian-derived theologies

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, but later became more associated with Humanism, no longer officially opposing Trinitarianism nor officially supporting Theism, and which holds no specific creeds.
In everyday British usage, "Unitarian" refers to the organisation formally known as the General Assembly of Unitarian and Free Christian Churches, which holds beliefs similar to Unitarian Universalists
International Council of Unitarians and Universalists, an umbrella organization
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

The English translation of the Arabic term موحد Muwaḥḥid (plural موحدون Muwaḥḥidūn), 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

Unitary state, a political system where a country is governed as one single unit
A member of the Unitarian Party of Argentine history
A period of the Argentine Civil War, the Unitarian-Federalist War: 1828–31.

A scholar who holds that the works of Homer were composed by a single individual (see Homeric scholarship)