Namatius was a 6th-century religious leader who served as the rector of Provence during the Merovingian period. He later held the position of bishop of Vienne, a role he occupied from approximately 552 until his death in 559. Some historical accounts suggest he may have been the same individual who attended the Council of Orange in 529. His wife, Euphrasia, was known for her charitable nature and entered a convent following his passing.