True Grit is a 2010 Western film directed by the Coen brothers, featuring a determined young girl seeking justice for her father's murder, accompanied by a tough U.S. Marshal and a Texas Ranger on a perilous journey through the Wild West.
The movie title on the poster appears to use Rockwell Bold, a slab serif font created by Frank Hinman Pierpont in 1934. You can find more information about this commercial font here.