Cenydd was a 6th-century Christian hermit associated with the Gower Peninsula in Wales. Born in Loughor, he is traditionally credited with establishing the church at Llangennith. While later legends suggest he was a Breton prince who survived infancy through divine intervention, historical evidence points to his life as a solitary religious figure. He is remembered for his ascetic lifestyle and his connection to both Welsh and Armorican territories, where he eventually lived and died.