I Was a Teenage Serial Killer is an underground no budget film written and directed by independent filmmaker Sarah Jacobson. It is a short black-and-white film of a 19-year-old girl who is sick of sexist men and kills them. It was Jacobson's first major film and it was released through her own company, Station Wagon Productions. She made the film under the guidance of her teacher, George Kuchar. The film features songs by the early riot grrrl band Heavens to Betsy.

Ed Halter, writing in the Village Voice, considered it "a key film of that decade's angrily subversive underground cinema."