Chaldean Catholic Archeparchy of Tehran

The Chaldean Catholic Metropolitan Archeparchy of Tehran (Latin: Archidioecesis Teheranensis Chaldaeorum) is an Archeparchy (Eastern Archdiocese) of the Chaldean Catholic church (Syro-Oriental Rite) in Iran, with its archiepiscopal see, St. Joseph's Cathedral, in the national capital Tehran.

The archeparchy was established in 1853 in the city of Sanandaj (Sehna, Sinna), Iran for the Iranian Christians in and around Senaya,[1] on territory split off from the Metropolitan Chaldean Catholic Archdiocese of Kirkuk (in Iraqi Kurdistan).

On 3 January 1966, it lost territory to establish the non-Metropolitan Chaldean Catholic Archeparchy of Ahvaz, also in Iran.

It enjoyed a papal visit from Pope Paul VI in November 1970.

[2] The Pahlavi School, built in 1916 in the Aqa Zaman district, is no longer there as it has been destroyed for a main street in recent development.