Agatho of Alexandria was a 7th-century Coptic leader who served as the 39th Pope of Alexandria and Patriarch of the See of St. Mark. A former presbyter, he rose to leadership during a turbulent era marked by the Muslim conquest of Egypt. Having been a disciple of Pope Benjamin I, Agatho maintained the church's continuity when his predecessor was forced to flee persecution. He eventually assumed the papacy officially following the death of Benjamin I during the reign of Muawiyah I.