Saint Viventiolus (French: Saint Vivientol) (460 – July 12, 524) (also known as Juventiole) was the Archbishop of Lyon (ancient Lugdunum) 514–523. Later canonized and venerated as a saint within the Catholic Church, ref>Archdiocese of Lyon, France at Catholic Saints.info.</ref> his feast Day is July 12. He is recognised in the Orthodox Church and the True Orthodox Church, including amongst the Tikhonites, as a pre-Great Schism Western Saint.
Viventiolus and his brother Rusticus were the sons of Aquilinus (c. 430-c. 470), a nobleman of Lyon, and friend of Sidonius Apollinaris (c. 400). Aquilinus was a vicarius of a province in Gaul between 423 and 448 under Apollinaris, the father of Sidonius.
Viventiolus was a monk of St. Oyend (St. Claude), in Jura, where he was elected prior. Avitus of Vienne recommended him for the See of Lyon. In 517, he and Avitus presided over the Council of Epaone.