Nicetius of Lyon was a 6th-century Catholic priest and archbishop who led the diocese of Lugdunum, known today as Lyon, starting around 552. Born into a noble Burgundian family, he received a scholarly and religious education from his parents. As the nephew of Bishop Sacerdos, he eventually succeeded his uncle in the episcopal seat. He is remembered for reviving ecclesiastical chant within his diocese and for his active role in both religious and secular legal matters.