The Untouchables is the name of a 1957 book by Eliot Ness and Oscar Fraley, and also of two television series and a motion picture that it inspired. They deal with the experiences of Eliot Ness, a United States Treasury agent, as he fought crime in Chicago in the 1930s. The stories often revolved around his enmity with the crime boss Al Capone.

The original television series aired from 1959-63, and starred Robert Stack as Eliot Ness and Neville Brand as Al Capone.

A movie based on the television series was released in 1987, directed by Brian de Palma and starring Kevin Costner as Eliot Ness, Sean Connery as Irish beat cop Jim Malone, and Robert de Niro as Al Capone. Sean Connery received the Academy Award for Best Supporting Actor for his role in the film.

A short-lived revival television series aired in 1993-94, starring Tom Amandes as Eliot Ness and William Forsythe as Al Capone.