1941 is a 1979 American war comedy film directed by Steven Spielberg and written by Robert Zemeckis and Bob Gale. The film stars an ensemble cast including Dan Aykroyd, Ned Beatty, John Belushi, John Candy, Christopher Lee, Tim Matheson, Toshiro Mifune, Robert Stack, Nancy Allen, and Mickey Rourke in his film debut. The story involves a panic in the Los Angeles area after the December 1941 attack on Pearl Harbor.

Co-writer Gale stated the plot is loosely based on what has come to be known as the Great Los Angeles Air Raid of 1942, as well as the bombardment of the Ellwood oil refinery, near Santa Barbara, by a Japanese submarine. Many other events in the film were based on real incidents, including the Zoot Suit Riots and an incident in which the U.S. Army placed an anti-aircraft gun in a homeowner's yard on the Maine coast.The film received heavily mixed reviews from critics with criticism towards the script, pacing and humor but praise towards the visual effects, sound, production design, John Williams's score and cinematography.

1941 was not as financially, nor critically successful as many of Spielberg's other films; because of this, the film has often been erroneously referred to as a box office bomb and a failure. 1941 was actually a box office success and it received belated popularity after an expanded version aired on ABC in the 1980s, with subsequent television broadcasts and home video reissues, raising it to cult status.