Mean Streets is a 1973 American crime drama film directed by Martin Scorsese, co-written by Scorsese and Mardik Martin, and starring Robert De Niro and Harvey Keitel. It was produced by Warner Bros. The film premiered at the New York Film Festival on October 2, 1973, and was released on October 14. De Niro won the National Society of Film Critics and the New York Film Critics Circle award for Best Supporting Actor for his role as "Johnny Boy" Civello.

The film was the first of several collaborations between Scorsese and De Niro. It was also Scorsese's first critical and commercial success. In 1997, Mean Streets was selected for preservation in the United States National Film Registry by the Library of Congress, who deemed it "culturally, historically, or aesthetically significant".