Kozu or Kōzu may refer to:
Places Kōzu-shima (神津島), or Kozu Island, an island south of Tokyo Bay Kōzu (国府津), a place name in the eastern region of Odawara, Kanagawa Kōzu Station (Kanagawa), a railway station in Odawara, Kanagawa Kōzu (高津), a place name in Chūō-ku, Osaka Kōzu Station (Osaka) (郡津駅), a train station located in Katano, Osaka Prefecture
People with the name Kozu Akutsu (born 1960), retired long-distance runner from Japan , Japanese painter Masaaki Kozu (born 1974), Japanese cross-country skier who has competed since 1993
Fictional characters Kozu (Ninjago), a character in Ninjago