The is a suffragan eparchy (Eastern Catholic diocese), covering all of Iran, in the ecclesiastical province 'of Cilicia' of the Armenian Catholic Patriarch, the head of the Armenian Catholic Church (Armenian Rite in the Armenian language).
is the only functioning place of worship and at the same time the cathedral of the eparchy, whose seat, despite its name, is located in Tehran .
Established on 30 April 1850 as Eparchy (Diocese) of Ispahan (Esfáan), on territory previously without Ordinary for the particular church sui iurus.
(all Armenian Rite)