• Autocephalous churches
• Constantinople (patriarchate)
• Alexandria (patriarchate)
• Antioch (patriarchate)
• Jerusalem (patriarchate)
• of Russia
• of Serbia
• of Romania
• of Bulgaria
• of Georgia
• of Cyprus
• of Greece
• of Poland
• of Albania
• in Czech & Slovak Republics
• in America
• Autonomous churches
• of Mount Sinai
• of Finland
• of Japan
• of China
• Estonian Apostolic
• Churches under Constantinople
• American Carpatho-Russian
• Ukrainian (of USA & Diaspora)
• Russian Exarchate (Western Europe)
• Albanian Diocese (America)
• Ukrainian (Canada)
• Churches of irregular status
• Old Believers
• Ukrainian Kiev Patriarchate and Autocephalous
• Belarusan Autocephalous
• Macedonian
• Old Calendar churches

Ronald G. Roberson, C.S.P., holds a doctorate from the Pontifical Oriental Institute in Rome. From 1988 to 1992, he was a staff member of the Pontifical Council for Promoting Christian Unity, serving as a liaison to the Orthodox churches. Father Roberson now lives at St. Paul’s College in Washington, D.C., and is associate director of the Secretariat for Ecumenical and Interreligious Affairs at the United States Conference of Catholic Bishops.

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