Padarn was an early 6th century British Christian abbot-bishop who founded Saint Padarn's Church in Ceredigion, Wales. He appears to be the same individual as the first bishop of Braga and Saint Paternus of Avranches in Normandy. Padarn built a monastery in Vannes and is considered one of the seven founding saints of Brittany. His early vita is one of five insular and two Breton saints' lives that mention King Arthur independently of Geoffrey of Monmouth's Historia Regum Britanniae.