Logan is a 2017 American superhero film based on the Marvel Comics character Wolverine. Directed by James Mangold, who co-wrote the screenplay with Michael Green and Scott Frank from a story by Mangold, it is the tenth film in the X-Men film series, the third and final installment in the Wolverine trilogy, following X-Men Origins: Wolverine (2009) and The Wolverine (2013), and a standalone sequel to X-Men: Days of Future Past (2014). The film stars Hugh Jackman in the main role, alongside Patrick Stewart, Richard E. Grant, Boyd Holbrook, Stephen Merchant, and Dafne Keen (in her film debut) in supporting roles. The film, which takes inspiration from the "Old Man Logan" comics storyline by Mark Millar and Steve McNiven, follows an aged Wolverine and an extremely ill Charles Xavier who must defend a young mutant named Laura from the Reavers led by Donald Pierce and Zander Rice.

Discussion for the film began following the release of The Wolverine in 2013, with Mangold in negotiations to write the treatment for the film and Lauren Shuler Donner returning to produce. After updates followed that December to May 2016, principal photography began that May, and ended that August, mainly in Louisiana, New Mexico, and Mississippi. The film was designed to look like it takes place in the near future, with slight updates to technology and the social environment, and written with a dark and violent tone closer to the Western than the traditional superhero genre.

Logan premiered at the 67th Berlin International Film Festival on February 17, 2017, and was theatrically released in the United States on March 3. It was praised by critics for its action scenes, emotional depth, performances, and Mangold's direction, becoming the best-reviewed film in the X-Men franchise. The National Board of Review named Logan one of the top-ten films of 2017, and was also nominated for Best Adapted Screenplay at the 90th Academy Awards, becoming the first live-action superhero film to be nominated for screenwriting. Grossing $619.2 million worldwide, it became the third-highest-grossing R-rated film at its release. Jackman and Keen reprised their roles in the film Deadpool & Wolverine (2024).