Strike (Russian: Стачка, translit. Stachka) is a 1925 silent film made in the Soviet Union by Sergei Eisenstein. It was Eisenstein's first full-length feature film, and he would go on to make The Battleship Potemkin later that year. It was acted by the Proletcult Theatre, and composed of six parts. It was in turn, intended to be one part of a seven-part series, entitled Towards Dictatorship (of the proletariat), that was left unfinished. Eisenstein's influential essay, Montage of Attractions was written between Strike's production and premiere.

The film depicts a strike in 1903 by the workers of a factory in pre-revolutionary Russia, and their subsequent suppression. The film is most famous for a sequence near the end in which the violent putting down of the strike is cross-cut with footage of cattle being slaughtered, although there are several other points in the movie where animals are used as metaphors for the conditions of various individuals. Another theme in the film is collectivism in opposition to individualism which was viewed as a convention of western film. Collective efforts and collectivization of characters were central to both Strike and Battleship Potemkin.