Pope Theonas of Alexandria was a scholar and the 16th Patriarch of Alexandria, serving from 282 to 300 in Roman Egypt. During his leadership, he transitioned the Christian community from meeting in private homes and caves to utilizing established churches, including one he constructed dedicated to the Virgin Mary. He was known for his gentle approach to conversion and his intellectual contributions, such as a letter providing guidance to Christians serving in the imperial court. He is remembered for his role in training his successor, Saint Peter.