Key Largo is a 1948 American film noir crime drama directed by John Huston and starring Humphrey Bogart, Edward G. Robinson and Lauren Bacall. The supporting cast features Lionel Barrymore and Claire Trevor. The film was adapted by Richard Brooks and Huston from Maxwell Anderson's 1939 play of the same name. Key Largo was the fourth and final film pairing of actors Bogart and Bacall, after To Have and Have Not (1944), The Big Sleep (1946), and Dark Passage (1947). Claire Trevor won the 1948 Best Supporting Actress Academy Award for her portrayal of alcoholic former nightclub singer Gaye Dawn.

Betty Joan Perske, professionally known as Lauren Bacall, was an American actress. She was named the 20th-greatest female star of classic Hollywood cinema by the American Film Institute and received an Academy Honorary Award in 2009 in recognition of her contribution to the Golden Age of motion pictures. She was known for her alluring, sultry presence and her distinctive, husky voice. Bacall was one of the last surviving major stars from the Golden Age of Hollywood cinema.