Seongjin Jeup clan (Korean: 성진 즙씨; Hanja: 城津 辻氏) is one of the Korean clans.
Their Bon-gwan is in Kimchaek, North Hamgyong Province.
According to the research held in 2000, the number of Jeup clan of Seongjin was 86.
Their founder was Jeup Gan-bu [ja] who was born between Korean mother and Japanese father.
Jeup Gan-bu [ja] was naturalized in his tenth in 1954 followed by his mother.