The Cheongju Jeong clan () is a Korean clan. Their bon-gwan is Cheongju, North Chungcheong Province. According to a census from 2015, the population of the Cheongju Jeong clan is 46,419. Their founder was Chŏng Kŭkkyŏng (), who was a military officer during the Goryeo dynasty. One of his descendants was the Joseon dynasty Neo-Confucian scholar, Chŏng Ku.
See also Jeong (surname)
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