Cyril of Constantinople was the legendary founder of the Carmelite Order.
Cyril of Constantinople may also refer to:
Cyril Lucaris (d. 1638), Ecumenical Patriarch of Constantinople Cyril II of Constantinople (d. 1640), Ecumenical Patriarch Cyril III of Constantinople (d. 1654), Ecumenical Patriarch Cyril IV of Constantinople (d. 1728), Ecumenical Patriarch Cyril V of Constantinople (d. 1775), Ecumenical Patriarch Cyril VI of Constantinople (d. 1821), Ecumenical Patriarch Cyril VII of Constantinople (d. 1872), Ecumenical Patriarch