Avilius of Alexandria was a first-century Christian leader who served as the third Patriarch of Alexandria. Following the death of Anianus, he was chosen by local priests and the laity in 83 AD during the reign of Emperor Domitian. During his twelve-year tenure, he focused on strengthening the faith of his followers, which led to a significant increase in the number of Christians across Egypt, Sudan, and five western provinces. He is recognized as a saint in several Christian traditions.