is a 1968 Japanese neo-noir crime thriller film directed by Tai Kato, who co-wrote the screenplay with Haruhiko Mimura and Yoji Yamada, based on a story by Tadashi Hiromi. The film stars Makoto Satà  as a violent criminal who avenges the death of a young boy.
Kawashima avenges a young boy by tracking down and killing the five women who sexually molested and drove him to suicide. Police investigate the links between the murders to uncover the perpetrator.
I, the Executioner was released in North America by Film Movement on March 25, 2025, as part of a two-film set titled Two Faces of Tai Kato, alongside By a Man's Face Shall You Know Him.