Ch'ŏrwŏn County is a kun, or county, in Kangwŏn province, North Korea. Portions of it were once a single county together with the county of the same name in South Korea; other portions were added from neighbouring counties in the 1952 reorganization of local governments. After the initial division of Korea, the entire county lay to the Northern side of the dividing line, but in the course of the Korean War part of the county was taken by the South.