Orthodox Church

The Orthodox Church and Orthodox Christianity most often refer to one of two Eastern Christian churches:

• Eastern Orthodox Church, the second-largest Christian church in the world
• Oriental Orthodox Churches, a branch of Eastern Christianity

Orthodox Church may also refer to:

• Early Church, the Christian religion prior to the First Council of Nicaea
• Christian orthodoxy, the doctrines subscribed to by the early church
• Orthodox Anglican Communion, a communion of Anglican churches
• African Orthodox Church, a predominantly African-American Christian denomination
• Evangelical Orthodox Church, an Eastern Protestant Christian denomination
• Orthodox Presbyterian Church, a confessional Presbyterian denomination located primarily in the United States
• Orthodox Presbyterian Church of New Zealand, a denomination formed in the 1960s led by George Mackenzie
• State church of the Roman Empire, Roman Empire's state religion after AD 380

See also

• Orthodoxy § Religions
• Eastern Orthodoxy
• Lutheran orthodoxy
• Reformed orthodoxy
• Neo-orthodoxy
• True Orthodox church, a movement within Eastern Orthodox Christianity
• Western Rite Orthodoxy, Eastern Orthodox churches which use western forms of liturgy
• Proto-orthodox Christianity
• Catholic Church (disambiguation)
• Orthodox (disambiguation)
• Orthodox calendar (disambiguation)
• Orthodox Communion (disambiguation)
• Orthodoxy by country (disambiguation)
• Orthodox Catholic Church (disambiguation)