Kim Hyun-joo (also Kim Hyeon-ju, Korean: 김 현주; born January 2, 1986) is a South Korean former swimmer, who specialized in freestyle events. She won a total of two bronze medals, as a member of the South Korean team, in the 4 × 100 m freestyle relay (3:44.81) and 4 × 200 m freestyle relay (8:19.62) at the 2002 Asian Games in Busan, South Korea.