Tetsuo: The Iron Man (鉄男, Tetsuo) is a 1989 Japanese cyberpunk horror film. It was written, produced, edited, and directed by cult-film director Shinya Tsukamoto, and produced by Japan Home Video. It is shot in the same low-budget, underground-production style as his first two films. Tetsuo established Tsukamoto internationally and created his worldwide cult following. It was followed by Tetsuo II: Body Hammer (1992) and Tetsuo: The Bullet Man (2009).