El Cid is a 1961 epic historical drama film directed by Anthony Mann and produced by Samuel Bronston. The film is loosely based on the life of the 11th-century Castilian warlord Rodrigo Díaz de Vivar, called "El Cid". The film stars Charlton Heston in the title role and Sophia Loren as Doña Jimena, spelled "Chimene" in the script and pronounced that way (shim-ain) in the film. The screenplay is credited to Fredric M. Frank, Philip Yordan and Ben Barzman, with uncredited contributions by Bernard Gordon.

Urraca of Zamora was a Leonese infanta, one of the five children of Ferdinand I the Great, who received the city of Zamora as her inheritance and exercised palatine authority in it. Her story was romanticized in the cantar de gesta called the Cantar de Mio Cid, and Robert Southey's Chronicle of the Cid. Urraca's mother was Sancha of León.