Diocese/Archidocese/Province/Patriarchate of Babylon (the office and area) or Bishop/Archbishop/Patriarch of Babylon (the person) may refer to:
Babylon, Mesopotamia Abdias of Babylon, first bishop of Babylon, one of the Seventy Apostles Polychronius, bishop of Babylon; July 30 (Eastern Orthodox liturgics) commemorates his martyrdom in AD 251 Patriarch of the Church of the East or Patriarch of Babylon List of patriarchs of the Church of the East Patriarchal Province of Seleucia-Ctesiphon, or the diocese of Seleucia-Ctesiphon within the province Chaldean Catholic Patriarchate of Baghdad, established after the 1552 schism, based in Baghdad (formerly Babylon) List of Chaldean Catholic patriarchs of Baghdad (formerly Babylon) Latin Catholic Diocese of Babylon, 1632–1848; subsequently the Archdiocese of Baghdad
Babylon, Egypt Diocese of Babylon, at Babylon Fortress in Coptic Cairo, Egypt; an Early Christian suffragan of Leontopolis, now a titular see Bishop Babylonos, title since 2009 of the hegumen of the Monastery of St George under the Greek Orthodox Patriarchate of Alexandria