Saint Honoratus of Vienne was a Christian bishop and a prominent figure in the early Church, known for his leadership in the city of Vienne in France. He is celebrated for his role in promoting Christianity and establishing monastic communities, which helped spread the faith throughout the region. Honoratus is often associated with the founding of the Abbey of Lérins, a significant monastic institution on the Île de Lérins. His feast day is observed on January 16, and he is recognized as a saint in both the Roman Catholic Church and the Eastern Orthodox Church.