Reefer Madness (originally made as Tell Your Children and sometimes titled as The Burning Question, Dope Addict, Doped Youth, and Love Madness) is a 1936–1939 American propaganda film revolving around the melodramatic events that ensue when high school students are lured by pushers to try marijuana—from a hit and run accident, to manslaughter, suicide, attempted rape, hallucinations, and descent into madness due to marijuana addiction. The film was directed by Louis Gasnier and featured a cast of mainly little known actors.

Originally financed by a church group under the title Tell Your Children, the film was intended to be shown to parents as a morality tale attempting to teach them about the dangers of cannabis use. However, soon after the film was shot, it was purchased by producer Dwain Esper, who re-cut the film for distribution on the exploitation film circuit beginning in 1938–1939 through the 1940s and 1950s.