It Can't Happen Here is a semi-satirical 1935 political novel by American author Sinclair Lewis. Published during the rise of fascism in Europe, the novel describes the rise of Buzz Windrip, a populist United States senator who is elected to the presidency after promising drastic economic and social reforms while promoting a return to patriotism and traditional values. After his election, Windrip takes complete control over the government and imposes totalitarian rule with the help of a ruthless paramilitary force, in the manner of Adolf Hitler and the Schutzstaffel. The novel's plot centers around newspaperman Doremus Jessup's opposition to the new regime and his subsequent struggle against it.

Harry Sinclair Lewis (February 7, 1885 – January 10, 1951) was an American novelist, short-story writer, and playwright. In 1930, he became the first writer from the United States to be awarded the Nobel Prize in Literature, "for his vigorous and graphic art of description and his ability to create, with wit and humor, new types of characters." His works are known for their insightful and critical views of American society and capitalist values, as well as for their strong characterizations of modern working women.