Kim Seo-jun (; born 24 March 1989) is a South Korean footballer who plays as midfielder for Gyeongju KH&NP in Korea National League.
He was selected by Ulsan Hyundai FC in the 2012 K League draft.
In July 2013, he joined Suwon FC on loan and made 19 appearances and 2 goals. He signed with Suwon FC on a permanent basis in 2014.