One Million Years B.C. is a 1966 British adventure fantasy film directed by Don Chaffey. The film was produced by Hammer Film Productions and Seven Arts, and is a remake of the 1940 American fantasy film One Million B.C.. The film stars Raquel Welch and John Richardson, set in a fictional age of cavemen and dinosaurs coexisting together. Location scenes were filmed on the Canary Islands in the middle of winter, in late 1965. The UK release prints of this film were printed in dye transfer Technicolor. The U.S. version released by 20th Century Fox was cut by nine minutes, printed in DeLuxe Color, and released in 1967.

Seven Arts Productions was a production company which made films for release by other studios. It was founded in 1957 by Eliot Hyman, Ray Stark, and Norman Katz.