This is a list of The Chaldean Catholic Patriarchs of Babylon, the leaders of the Chaldean Catholic Church and one of the Patriarchs of the east of the Catholic Church. The term Chaldeans in this frame indicates the members of the Church of the East in Full Communion with the Holy See. This list continues from the Patriarchs of Babylon of the Church of the East that traces itself back from St. Thomas in the 1st century.