Jinju So clan (Korean: 진주 소씨; Hanja: 晉州 蘇氏) was one of the Korean clans.
Their Bon-gwan was in Jinju, South Gyeongsang Province.
According to the research in 2015, the number of Jinju So clan was 50,357.
So Baek-son [ko], a 130th descendant, built Jinhan confederacy.
After that, So Gyeong [ja], a 29th descendant of So Baek-son, began Jinju So clan when he served as a government official in Goryeo.