The following is the List of the Roman Catholic dioceses of Iran.
List of dioceses
Ecclesiastical Province of Tehran
- Archdiocese of Tehran (Chaldean)
- Eparchy of Ispahan (Armenian)
Ecclesiastical Province of Urmya
- Archdiocese of Urmya (Chaldean)
- Diocese of Salmas (Chaldean)
Immediately Subject to the Holy See
- Archdiocese of Teheran-Isfahan (Latin)
Immediately Subject to the Patriarch
- Archeparchy of Ahwaz (Chaldean)