It Can't Happen Here is a 1935 dystopian political novel by American author Sinclair Lewis. Set in the fictionalized version of 1930s United States, it follows an American politician, Berzelius "Buzz" Windrip, who quickly rises to power to become the country's first outright dictator and Doremus Jessup, a newspaper editor who sees Windrip's fascist policies for what they are ahead of time and who becomes Windrip's most ardent critic. The novel was adapted into a play by Lewis and John C. Moffitt in 1936.

Harry Sinclair Lewis was an American novelist, short-story writer, and playwright. In 1930, he became the first author from the United States to receive the Nobel Prize in Literature, which was awarded "for his vigorous and graphic art of description and his ability to create, with wit and humor, new types of characters." Lewis wrote six popular novels: Main Street (1920), Babbitt (1922), Arrowsmith (1925), Elmer Gantry (1927), Dodsworth (1929), and It Can't Happen Here (1935).