Duel : فیلم دوئل : is a 1971 American road action-thriller directed by Steven Spielberg, marking one of his earliest directorial efforts. The film follows a traveling salesman, portrayed by Dennis Weaver, as he drives through rural California to meet a client. His journey takes a terrifying turn when he becomes the target of a relentless and mostly unseen semi-truck driver, who begins to chase and terrorize him on the desolate highways. The screenplay, written by Richard Matheson, is an adaptation of his own short story Duel, which was inspired by a real-life incident that occurred on November 22, 1963, when Matheson was dangerously cut off by a trucker on a California freeway.

Duel was originally produced by Universal Television and aired as part of the ABC Movie of the Week series on November 13, 1971. Due to its success and popularity, the film was later extended with additional scenes and released internationally in theaters by Universal Pictures. The film was met with generally positive reviews, with particular praise directed at Spielberg's masterful direction. Over the years, Duel has gained recognition as an influential cult classic and is considered one of the greatest films ever made for television. The impact of Duel on the action-thriller genre and Spielberg's career remains significant to this day.