The Chungju Yoo clan or Chungju Yu clan (Korean: 충주 유씨; Hanja: 忠州 劉氏) is one of the noble Korean clans in the early Goryeo dynasty. Their Bon-gwan is in Chungju City, North Chungcheong Province. Their founder was (유긍달) who was a Chungju powerful nobleman in the end of Kingdom of Unified Silla and become the father of Queen Sinmyeongsunseong, Taejo of Goryeo's first queen consort and third wife. She also become the mother of 5 princes (include Jeongjong of Goryeo, Gwangjong of Goryeo, and Great King Munwon) and 2 daughters (Princess Nakrang and Princess Heungbang). After died, Yu Geung-dal was honoured as Taesanaesaryeong (태사내사령, 太師內史令).