Lonely Are the Brave is a 1962 American black and white Western film adaptation of the Edward Abbey novel The Brave Cowboy directed by David Miller from a screenplay by Dalton Trumbo and starring Kirk Douglas, Gena Rowlands and Walter Matthau.

James Dalton Trumbo was an American screenwriter who scripted many award-winning films, including Roman Holiday (1953), Exodus, Spartacus, and Thirty Seconds Over Tokyo (1944). One of the Hollywood Ten, he refused to testify before the House Un-American Activities Committee (HUAC) in 1947 during the committee's investigation of alleged Communist influences in the motion picture industry.