Dingad of Llandingat was a Welsh saint who lived during the late 5th century. As a son of King Brychan, the ruler of the Brycheiniog kingdom in south-east Wales, he held royal lineage. He is primarily recognized for his role as a founder of early Christian churches in the region. His historical presence is documented within the early Brychan manuscripts, which identify him as part of the royal family of Powys.