Cyril IV of Constantinople

Cyril IV (Κύριλλος; died 1728) was the Ecumenical Patriarch of Constantinople from 1711 until his resignation in 1713. He was also metropolitan bishop of Cyzicus.

He was elected patriarch in 1709, but took office only after Athanasius V of Constantinople was deposed. He resigned in 1713 and remained in Constantinople until his death in 1728.