Tomahawk is a 1951 American Western film directed by George Sherman and starring Van Heflin and Yvonne De Carlo. The film is loosely based on events that took place in Wyoming in 1866 to 1868 around Fort Phil Kearny on the Bozeman Trail such as the Fetterman Fight and Wagon Box Fight. In the UK, the film was released as The Battle of Powder River.

Emmett Evan "Van" Heflin Jr. was an American theatre, radio, and film actor. He played mostly character parts over the course of his film career, but during the 1940s had a string of roles as a leading man. Heflin won the Academy Award for Best Supporting Actor for his performance in Johnny Eager (1942). He also had memorable roles in Westerns such as Shane (1953), 3:10 to Yuma (1957), and Gunman's Walk (1958).