Duel is a 1971 American road action-thriller television film directed by Steven Spielberg. It centers on a traveling salesman David Mann (Dennis Weaver) driving his car through rural California to meet a client. However, he finds himself chased and terrorized by the mostly unseen driver of a semi-truck. The screenplay by Richard Matheson adapts his own short story of the same name, published in the April 1971 issue of Playboy, and based on an encounter on November 22, 1963, when a trucker dangerously cut him off on a California freeway.

Produced by Universal Television, Duel originally aired as a part of the ABC Movie of the Week series on November 13, 1971. It later received an international theatrical release by Universal Pictures in an extended version featuring scenes shot after the film's original TV broadcast. The film received generally positive reviews from critics, with Spielberg's direction being singled out for praise. It has since been recognized as an influential cult classic and one of the greatest films ever made for television.