St Irenaeus Orthodox Theological Institute

“Eastern” Traditions

Eastern Orthodoxy consists of several autocephalous (self-governing) churches: the four ancient Patriarchates of the early church, Constantinople, Alexandria, Antioch and Jerusalem, the four Patriarchates of more recent origin, Russia, Serbia, Romania, and Bulgaria, the Catholicosate of Georgia, and the churches of Cyprus, Greece, Poland, Albania, and the Czech Lands and Slovakia. It also includes the autonomous Orthodox churches of Finland and Estonia (with two jurisdictions). The Eastern Orthodox “diaspora” consists of churches in the Americas, Asia, Australia, Western Europe and sub-Saharan Africa. In the United States and Japan, some Orthodox churches have been granted autonomy or semi-autonomy, though these churches have not been recognized by all Orthodox churches. The monastery of Sinai is an autonomous monastic community related to the Patriarchate of Jerusalem, and Mount Athos and the semi-autonomous Church of Crete remain under the jurisdiction of the Patriarchate of Constantinople. (Source:


The St Irenaeus Orthodox Theological Institute

The St Irenaeus Orthodox Theological Institute is the successor of ACOT (Amsterdam Centre for Orthodox Theology), providing educational programmes at an academic level and courses and lectures for those interested in Orthodoxy.