The Dirties is a 2013 Canadian found footage thriller film and the directorial debut of Matt Johnson. It has received praise from critics as well as numerous awards, including the Grand Jury Prize for Best Narrative at the 2013 Slamdance Film Festival. Kevin Smith, who helped distribute the film, dubbed The Dirties "the most important movie you will see all year."

Found footage is a cinematic technique in which all or a substantial part of the work is presented as if it were film or video recordings recorded by characters in the story, and later "found" and presented to the audience. The events on screen are typically seen through the camera of one or more of the characters involved, often accompanied by their real-time, off-camera commentary. For added realism, the cinematography may be done by the actors themselves as they perform, and shaky camera work and naturalistic acting are routinely employed. The footage may be presented as if it were "raw" and complete or as if it had been edited into a narrative by those who "found" it.