The Great Dictator is a 1940 American anti-fascist, political satire, and black comedy film written, directed, produced, scored by, and starring British filmmaker Charlie Chaplin. Having been the only Hollywood filmmaker to continue to make silent films well into the period of sound films, Chaplin made this his first true sound film.

Chaplin's film advanced a stirring condemnation of the German and Italian dictators Adolf Hitler and Benito Mussolini, as well as fascism, antisemitism, and the Nazis. At the time of its first release, the United States was still at peace with Nazi Germany and neutral during what were the early days of World War II. Chaplin plays both leading roles: a ruthless fascist dictator and a persecuted Jewish barber.

The Great Dictator was popular with audiences, becoming Chaplin's most commercially successful film. Modern critics have praised it as a historically significant film, one of the greatest comedy films ever made and an important work of satire. In 1997, it was selected by the Library of Congress for preservation in the United States National Film Registry as being "culturally, historically, or aesthetically significant". The Great Dictator was nominated for five Academy Awards – Outstanding Production, Best Actor, Best Writing (Original Screenplay), Best Supporting Actor for Jack Oakie, and Best Music (Original Score).

In his 1964 autobiography, Chaplin stated that he could not have made the film if he had known about the true extent of the horrors of the Nazi concentration camps at that time.