The Longest Day
- Ano: 1962
- País: United States of America
- Xénero: War, Action, Drama
- Estudo: Darryl F. Zanuck Productions, 20th Century Fox
- Palabra clave: steel helmet, resistance, allies, world war ii, normandy, france, based on true story, d-day, historical fiction, soldier
- Director: Ken Annakin, Bernhard Wicki, Andrew Marton, Darryl F. Zanuck, Gerd Oswald
- Reparto: Henry Fonda, John Wayne, Robert Mitchum, Robert Ryan, Eddie Albert, Paul Anka