Sidney Lumet (, loo-MET; born June 25, 1924) is an American film director, with over 50 films to his name, including 12 Angry Men (1957), Serpico (1973), Dog Day Afternoon (1975), Network (1976) and The Verdict (1982), all of which, except for Serpico (1973), earned him Academy Award nominations for Best Director.

According to The Encyclopedia of Hollywood, Lumet is one of the most prolific directors of the modern era making more than one movie per year on average since his directorial debut in 1957. He is especially noted for his ability to draw major actors to his projects. "Because of his visual economy, strong direction of actors, vigorous storytelling and use of the camera to accent themes," states Turner Classic Movies. "Lumet produced a body of work that could only be defined as extraordinary.""TCM Biography"