To learn more about Eastern Christian Churches, CNEWA.ORG has posted a free book online:
The Eastern Christian Churches – A Brief Survey (6th edition) by Ronald Roberson, CSP
Eastern Catholic Churches
1. The Ukrainian Greek Catholic Church (Major Archepiscopal)
2. The Syro-Malabar Catholic Church (Major Archepiscopal)
3. The Maronite Catholic Church (Patriarchal)
4. The Melkite Greek Catholic Church (Patriarchal)
5. The Romanian Greek Catholic Church (Major Archepiscopal)
6. The Syro-Malankara Catholic Church (Major Archepiscopal)
7. The Armenian Catholic Church (Patriarchal)
8. The Chaldean Catholic Church (Patriarchal)
9. The Eparchy of Mukacevo
10. The Hungarian Greek Catholic Church
11. The Coptic Catholic Church (Patriarchal)
12. The Slovak Greek Catholic Church
13. The Ethiopian/Eritrean Catholic Church (Metropolitan)
14. The Ruthenian Apostolic Exarchate in Czech Republic
15. The Syrian Catholic Church (Patriarchal)
16. The (Ruthenian) Byzantine Catholic Church USA (Metropolitan)
17. The Italo-Albanian Greek Catholic Church
18. The Apostolic Exarchate for Serbia and Montenegro
19. The Eparchy of Krizevci, Croatia
20. The Apostolic Exarchate in FYROM ( Macedonia)
21. The Bulgarian Greek Catholic Church
22. The Greek Catholic Church in Greece and TurkeyCommunities without hierarchy
Russians, Belarusans, Georgians, Albanians
The Orthodox Churches
The Autocephalous Churches
1. The Patriarchate of Constantinople
2. The Patriarchate of Alexandria
3. The Patriarchate of Antioch
4. The Patriarchate of Jerusalem
5. The Orthodox Church of Russia
6. The Orthodox Church of Serbia
7. The Orthodox Church of Romania
8. The Orthodox Church of Bulgaria
9. The Orthodox Church of Georgia
The Autonomous Churches
1. The Orthodox Church of Mount Sinai
2. The Orthodox Church of Finland
3. The Orthodox Church of Japan
4. The Orthodox Church of China
5. The Estonian Apostolic Orthodox ChurchCanonical Churches Under Constantinople
1.The American Carpatho-Russian Orthodox Church
2. The Ukrainian Orthodox Church of the USA and Diaspora
3. The Russian Orthodox Exarchate in Western Europe
4. The Albanian Orthodox Diocese of America
5. The Belarusan Council of Orthodox Churches in North America
6. The Ukrainian Orthodox Church of CanadaChurches of Irregular Status
1. The Old Believers
2. The Ukrainian Orthodox Church – Kiev Patriarchate and Ukrainian Autocephalous Church
3. The Belarusan Autocephalous Orthodox Church
4. The Macedonian Orthodox Church
5. The Old Calendar Orthodox Churches
Oriental Orthodox Churches
1. The Armenian Apostolic Church
2. The Coptic Orthodox Church
3. The Ethiopian Orthodox Church
4. The Syriac Orthodox Church of Antioch
5. The Malankara Orthodox Syrian Church
6. The Eritrean Orthodox Church
