The Chŏngju Yu clan () is a Korean clan. Their bongwan (place of origin) is Chŏngju, in modern-day Kaepung, Kaesong, North Korea. It was founded by Yu Chon-gung who was a nobleman from Chŏngju and served as one of the Three Major Grand Masters ().
History Wang Kon first met the future Queen Sinhye in Chŏngju while he was still serving under Taebong's monarch, Kung Ye. When four of Kung Ye's generals suggested Wang to rebel against Gung, Queen Sinhye's family, actively persuaded Wang to overthrew Kung Ye.
A prominent ancestor (jungsijo) who made the family prosperous was Yu So () become a Jeonjungsieosa () in 1011, Eosajapdan () in 1016, Saheonjungseung () in 1019, and Ganuidaebu () in 1022, also Taejabingaek ().
Goryeo Queen Consorts Agnatic descent Chŏngju Yu produced the three-queens consorts of Goryeo, they were: Queen Sinhye, King Taejo's first wife. Queen Jeongdeok, King Taejo's sixth wife Queen Myeongui, King Sukjong's only wife.
Adopted Chŏngju Yu clan Queen Munhye, King Munwon's only wife. Queen Seonui, King Daejong's only wife.
See also Yoo (Korean surname)
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