Sailor Suit and Machine Gun is a 1981 Japanese yakuza film directed by Shinji Sōmai, starring Japanese idol Hiroko Yakushimaru as the main character and based on the novel of the same name by Jirō Akagawa. It was released on 19 December 1981. A satirical take on yakuza films, the storyline involves a teenage delinquent schoolgirl named Izumi Hoshi who inherits her father's yakuza clan. The title is a reference to a scene where the main character shoots several rival gang members with a submachine gun, while wearing a sailor-fuku, the traditional Japanese school uniform.