Philogonius of Antioch was a 4th-century bishop and former lawyer known for his integrity and defense of orthodox Christianity. Originally a successful advocate in Antioch, he transitioned to a monastic life following the death of his wife. In 318, he was appointed to the see of Antioch, bypassing the traditional clerical progression due to his high reputation. He is most recognized for his vigorous opposition to the Arian heresy and for protecting his congregation during the persecutions led by Roman emperors such as Licinius.