Johnny Dangerously is a 1984 American crime comedy film directed by Amy Heckerling; two of its four screenwriters, Jeff Harris and Bernie Kukoff, had previously created the hit series Diff'rent Strokes.

The film, a parody of 1930s crime/gangster movies, stars Michael Keaton as an honest, goodhearted man who turns to a life of crime to finance his mother's skyrocketing medical bills and to put his younger brother through law school. Joe Piscopo, Marilu Henner, Maureen Stapleton, Peter Boyle, Griffin Dunne, Dom DeLuise, Danny DeVito, Dick Butkus and Alan Hale Jr. were in the film.

Part of the film's comedic appeal is the clever and frequent use of malapropisms by Johnny and other crime characters, especially in instances where curse words were intended.