Germerius was a 6th-century bishop of Toulouse, whose historical existence is sometimes debated. Originally from Angoulême, or possibly Jerusalem, he reportedly traveled to Gaul following an angelic instruction to seek the episcopacy. He served as the leader of the Toulouse diocese from approximately 510 until 560. During his tenure, he established several religious sites, including the monastery of Saint-Germier, which managed various properties and churches in the region.