Established in 1885 as Eparchy (Diocese) of Iskanderiya / Alexandria, on territory separated for the particular church sui iuris from the Latin Catholic Apostolic Vicariate of Egypt.
Episcopal ordinaries
Suffragan Eparchs (Bishops) of Alexandria (Iskanderiya) (of the Armenians)
Raphaël Bayan (1960.07.02 – retired 1989.03.09), succeeding as former Titular Bishop of Taua (1958.12.12 – 1960.07.02) & Coadjutor Eparch of Alexandria (1958.12.12 – 1960.07.02)
Boutros Taza Tarmouni (1989.08.21 – 1999.10.07), later Patriarch of Cilicia of the Armenians (Lebanon) ([1999.10.07] 1999.10.13 – 2015.06.25), President of Synod of the Armenian Catholic Church (1999.10.13 – 2015.06.25)