Eutropius of Saintes was a 3rd-century bishop and missionary who served as the first prelate of Saintes in Gaul. Depending on historical tradition, he may have been a Roman or a Persian of royal lineage. He is credited with spreading Christianity in the region, having lived as a hermit before his death. He was eventually martyred in Saintes, an event that solidified his reputation as a holy figure in the early church.