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Sŏng Chusik (Korean: 성주식; Hanja: 成周寔; 1891–1959) is a Korean soldier, socialist independence activist at the time of Korea under Japanese rule and politician of North Korea.
In the time of Korea under Japanese rule, he was in Korean Volunteers Army(조선의용대) and the Provisional Government of the Republic of Korea, and after liberation, he participated in the Democratic National Front and the left-right coalition movement.