Burton Stephen "Burt" Lancaster (November 2, 1913 – October 20, 1994) was an American film actor noted for his athletic physique and distinctive smile (which he called "The Grin"). Later he took roles that went against his initial "tough guy" image. In the late 1950s Lancaster abandoned his "all-American" image and came to be regarded as one of the best actors of his generation.

Lancaster was nominated four times for Academy Awards and won once — for his work in Elmer Gantry in 1960. He also won a Golden Globe for that performance and BAFTA Awards for The Birdman of Alcatraz (1962) and Atlantic City (1980). His production company, Hecht-Hill-Lancaster, was the most successful and innovative star-driven independent production company in Hollywood of the 1950s, making movies such as Marty (1955), Trapeze (1956), and Sweet Smell of Success (1957).