Saint Cyril (; , ) may refer to:
People Cyril (died 320), one of the Forty Martyrs of Sebaste Cyril of Jerusalem (–386), Christian theologian and bishop Cyril of Alexandria (–444), Patriarch of Alexandria Cyril the Philosopher (826–869), Byzantine theologian and missionary, credited with devising the Glagolitic alphabet Pope Cyril II of Alexandria (1078–1092), Coptic Patriarch of Alexandria Cyril of Turov (1130–1182), Belarusian Orthodox theologian and bishop Cyril I of Serbia (died 1418 or 1419), Serbian Orthodox Patriarch from 1407 until his death Cyril of Beloozero (1337–1427), Russian Orthodox hegumen and disciple of St. Sergius of Radonezh Cyril Lucaris (1572–1638), six-time Ecumenical Patriarch of Constantinople between 1612 and 1638 and Greek Orthodox Patriarch of Alexandria Cyril VI of Constantinople (died 1821), Ecumenical Patriarch of Constantinople 1813–1818 and New Hieromartyr Pope Cyril V of Alexandria (1874–1927), Coptic Patriarch of Alexandria Cyril Smirnov (died 1937), Russian Orthodox Metropolitan of Kazan and New Hieromartyr, feast November 7 Pope Cyril VI of Alexandria (1902–1971), Coptic Patriarch of Alexandria
See also Cyril (disambiguation) Saints Cyril and Methodius (disambiguation) St. Cyril's Monastery (disambiguation)