The Strangers is a 2008 American psychological horror film written and directed by Bryan Bertino. The film follows a couple (portrayed by Liv Tyler and Scott Speedman) whose stay at a vacation home is disrupted by three masked intruders (portrayed by Kip Weeks, Gemma Ward, and Laura Margolis) who infiltrate the home one night. It is the first installment in The Strangers film series. The screenplay was inspired by two real-life events: the multiple-homicide Manson family Tate murders and a series of break-ins that occurred in Bertino's neighborhood as a child. Some journalists noted similarities between the film and the Keddie cabin murders that occurred in Keddie, California, in 1981, though Bertino did not cite this as a reference.

Made on a budget of $9 million, the film was shot on location in rural South Carolina in the fall of 2006. Originally slated for a theatrical release in November 2007, it was postponed before a theatrical release on May 30, 2008. The film became a sleeper hit, grossing $82 million at the box office worldwide. It received mixed reviews from critics, with some praising its atmosphere and tension, and others criticizing its script and characters.

In the years since its release, it has become a cult film. A sequel, The Strangers: Prey at Night, was released in March 2018, followed by a standalone sequel trilogy of Strangers films, with the first, subtitled Chapter 1, released in May 2024.