Jack Reacher is a 2012 American action thriller film written and directed by Christopher McQuarrie, starring Tom Cruise and based on Lee Child's 2005 novel One Shot. Cruise portrays the title character and the supporting cast features Rosamund Pike, Werner Herzog, Robert Duvall, David Oyelowo, Richard Jenkins, and Jai Courtney. The film focuses on a normally non-contactable former US Army Major MP investigator Jack Reacher, who is called upon to aid in a homicide investigation involving a trained military sniper believed to be responsible for a mass shooting.

The film entered production in October 2011, and was completed in January 2012. It was filmed entirely on location in Pittsburgh, Pennsylvania. The musical score was composed by Joe Kraemer and performed by the Hollywood Studio Symphony.

The film's premiere screening in Pittsburgh was postponed after the Sandy Hook Elementary School shooting; the movie was released in North America one week later on December 21, 2012, where it received generally positive reviews and was successful at the box office. A sequel was developed with Cruise, titled Jack Reacher: Never Go Back, based on the 2013 novel Never Go Back, which was released on October 21, 2016.