Eastern Orthodoxy by country
Based on the numbers of adherents, the Eastern Orthodox Church (also known as Eastern Orthodoxy) is the second largest Christian communion in the world after the Roman Catholic Church. The most common estimates of the number of Eastern Orthodox Christians worldwide is approximately 200–260 million. The numerous Protestant groups in the world, if taken all together, outnumber the Eastern Orthodox, but they differ theologically and do not form a single communion.
Episcopal Conference of Turkey
The Catholics make up 33,500 of the 130,000 Christians in Turkey. The vast majority are members of the Oriental Orthodox Church, with smaller number beings members of the Eastern Orthodox Church and even fewer Evangelical Christians. The Roman Catholics or Latin-Rite Catholics are represented by Apostolic Vicars in Istanbul and Iskenderun and an Archbishop in Izmir. The Armenian Catholics have an Archbishop in Istanbul, the Syriac Catholics have an Patriarchal Exarch in Istanbul, the Chaldean Catholics have an Archbishop in Diyarbakir, and the Greek Catholics have an Apostolic Exarch in Istanbul. The Catholic Bishops' Conference of Turkey has seven members: