Philogonius was a fourth-century bishop of Antioch in Syria who, before his elevation to the episcopate, was a lawyer renowned for defending the poor, the widowed, and the orphaned. He is commemorated on December 20 and is honored as a confessor for his steadfastness during the persecutions of the early fourth century and as a defender of the Nicene faith against the rising Arian heresy.
According to the tradition, Philogonius was educated for the law and practiced it with great success at the bar of Antioch, where he became known for his eloquence and for using his skill on behalf of the vulnerable. He married and, by some accounts, had a daughter. After the death of his wife he turned to the service of the Church, and on account of his upright life and theological knowledge he was chosen Bishop of Antioch, succeeding Vitalius I—an appointment made as an exception to the usual canonical requirement of prior priestly service.
As bishop, Philogonius guided the Church of Antioch through a period of both persecution and doctrinal conflict. He is remembered as a confessor for the sufferings he endured during the persecutions associated with the emperors Maximinus and Licinius. When Arius began to propagate his teaching at Alexandria and was condemned by Bishop Alexander of Alexandria, Alexander communicated the sentence to Philogonius by a synodal letter, and Philogonius is credited with defending the orthodox faith and preventing unrest in the Church at Antioch.
Philogonius reposed in peace around the year 323. The esteem in which he was held is reflected in the fact that, in 386, Saint John Chrysostom preached a homily in his honor at Antioch on his feast day, recalling the virtue and piety of the Church under his leadership.