Several Christian Churches or church bodies are commonly referred to as "Orthodox". Most of them are identifiable as part of Eastern Christianity. The three principle Orthodox movements are:

The Eastern Orthodox Church, which includes the following subgroups

• Orthodox Church of Constantinople
• Cypriot Orthodox Church
• Church of Greece
• Serbian Orthodox Church
• Russian Orthodox Church
• Russian Orthodox Church Outside of Russia
• Romanian Orthodox Church

Oriental Orthodoxy, which includes the following

• Coptic Christianity of Egypt, also referred to as the Coptic Church
• Syriac Orthodox Church
• Armenian Apostolic Church
• Ethiopian Orthodox Tewahedo Church
• Indian Orthodox Church
• Eritrean Orthodox Church

The Assyrian Church of the East, which sometimes describes itself as the Assyrian Orthodox Church

Other movements and churches described as Orthodox

• Old Believers, a movement containing a large number of Orthodox denominations, which broke from the Russian Orthodox Church in the 17th century:
  • Russian Orthodox Old-Rite Church

• Western Orthodoxy, which is a term usually used to describe parishes that, although actually Eastern Orthodox, use rites adapted for use in Protestant or Catholic countries. It is also used by some church bodies associated with the Old Catholic Church, Continuing Anglican Movement, and Liberal Catholic Church.

Ortodoxie | Orthodoxie | Église orthodoxe | Orthodox christendom | Ortodoxism