Corentin of Quimper is a Breton saint. He was the first bishop of Quimper. Corentin was a hermit at Plomodiern and was regarded as one of the seven founding saints of Brittany. He is the patron saint of Cornouaille, Brittany, and is also the patron saint of seafood. His feast day is December 12.

The Bretons are an ethnic group native to Brittany, north-western France. They trace their heritage to groups of Brittonic speakers who emigrated from southwestern Great Britain, particularly Cornwall and Devon, mostly during the Anglo-Saxon settlement of Britain. They migrated in waves from the 3rd to 9th century into Armorica, which was subsequently named Brittany after them.