Primate of the Church of the East from 399 to 410
16th Catholicos of the East (Seleucia-Ctesiphon) · c. 399–c. 410
Isaac or Mar Isaac was the Persian bishop of Seleucia-Ctesiphon, grand metropolitan and primate of the Church of the East from 399 to 410. He is included in the traditional list of patriarchs of the Church of the East.
Seleucia