Brokeback Mountain is a 2005 romantic-drama film that depicts the complex romantic and sexual relationship between two men in the American West from 1963 to 1983.

The film was directed by Taiwanese director Ang Lee from a screenplay by Diana Ossana and Larry McMurtry, which they adapted from the short story "Brokeback Mountain" by Annie Proulx. The film stars Heath Ledger, Jake Gyllenhaal, Anne Hathaway, and Michelle Williams.

Brokeback Mountain won the Golden Lion at the Venice Film Festival, and was honored with Best Picture and Best Director accolades from the British Academy of Film and Television Arts, Golden Globe Awards, Critics Choice Awards, and Independent Spirit Awards among many other organizations and festivals. Brokeback Mountain had the most nominations (eight) for the 78th Academy Awards, where it won three: Best Director, Best Adapted Screenplay, and Best Original Score. The film was widely considered to be a front runner for the Academy Award for Best Picture, but lost to Crash.