Genesius of Lyon was a 7th-century French prelate who served as the 37th Archbishop of Lyon. Originally a prior at Fontenelle Abbey, he held a position at the court of Clovis II, where he served as the chief almoner to Queen Bathildis. Following the death of Annemund, he was consecrated as bishop around 657 or 658. He was known for his leadership during political conflicts, notably defending his city against armed groups during the disputes between Ebroin and Saint Leger.