The Orthodox Church, officially the Orthodox Catholic Church, is a Christian church. Their type of Christianity is also called Orthodox Christianity or Orthodoxy. Their members are called Orthodox Christians, although there is another group of Churches called Oriental Orthodox that is not in communion with the Orthodox Church. There are about 300 million Orthodox Christians in the world. Most Orthodox Christians are found in Russia, Greece, Eastern Europe, and the Middle East, but there are Orthodox Christians everywhere in the world.
Distribution of Eastern Orthodoxy in the world by country
The many churches of the Orthodox Church are distinct in terms of administration and local culture, but for the most part exist in full communion with one another. Most of these churches are led by patriarchs. Most patriarchs recognise the Patriarch of Constantinople as their spiritual leader.
The following listing contains a selection of Eastern Orthodox Churches. Unless otherwise stated, they are in communion: