Doppelganger (ドッペルゲンガー, Dopperugengā) is a 2003 Japanese black comedy fantasy film directed and co-written by Kiyoshi Kurosawa, starring Kōji Yakusho, Hiromi Nagasaku and Yūsuke Santamaria.

In the film, a robotic engineer frustrated with his life (Yakusho) suddenly encounters another version of himself (also played by Yakusho), who acts very differently than he does.