Diocese of Beirut or Eparchy of Beirut may refer to:
Syriac Catholic Diocese of Beirut, patriarchal diocese of the Syriac Catholic Church, centered in Beirut Chaldean Catholic Diocese of Beirut, a Chaldean Catholic diocese, centered in Beirut Roman Catholic Diocese of Beirut, former (medieval) Roman Catholic diocese, centered in Beirut
It may also refer to: Armenian Apostolic Diocese of Lebanon, an Armenian Oriental-Orthodox diocese, centered in Beirut
See also Archdiocese of Beirut (disambiguation) Archbishop of Beirut (disambiguation) Christianity in Lebanon