The Great Train Robbery is a 1903 American silent film made by Edwin S. Porter for the Edison Manufacturing Company. It follows a gang of outlaws who hold up and rob a steam locomotive at a station in the American West, flee across mountainous terrain, and are finally defeated by a posse of locals. The short film draws on many sources, including a robust existing tradition of Western films, recent European innovations in film technique, the play of the same name by Scott Marble, the popularity of train-themed films, and possibly real-life incidents involving outlaws such as Butch Cassidy.

Edwin Stanton Porter was an American film pioneer, most famous as a producer, director, studio manager and cinematographer with the Edison Manufacturing Company and the Famous Players Film Company. Of over 250 films created by Porter, his most important include What Happened on Twenty-third Street, New York City (1901), Jack and the Beanstalk (1902), Life of an American Fireman (1903), The Great Train Robbery (1903), The European Rest Cure (1904), The Kleptomaniac (1905), Life of a Cowboy (1906), Rescued from an Eagle's Nest (1908), and The Prisoner of Zenda (1913).