Eliya IX (Syriac: ܐܠܝܐ / Elīyā, died 17 May 1700) was Patriarch of the Church of the East from 1660 to 1700, with his residence in Rabban Hormizd Monastery, near Alqosh, in modern Iraq. He was a "vigorous defender of the traditional faith", and on several occasions acted against local representatives of the Catholic Church in the region. His correspondence with Rome, in 1668–1669, ended without agreement on the discussed issues.