Paulinus of Trier was a 4th-century bishop from Aquitaine who served the church in Trier. Educated at the cathedral school in Poitiers, he eventually traveled to Germany to succeed Maximin as bishop. He is primarily remembered for his theological stance, specifically his support for Athanasius the Great during the struggle against Arianism. Due to his opposition to this movement, Emperor Constantius II targeted him during the Synod of Arles in 353, resulting in his exile to Phrygia.