Kim So-Jung (born 3 March 1986) is a South Korean former tennis player. Her highest WTA singles ranking is 204, which she achieved on 20 September 2010. Her career-high in doubles is 233, which she reached on July 17, 2006. She won silver for the mixed-doubles teams event, defeating the Taiwanese team at the 2009 Universiade Games. She has also played at the Korea Open.