| Release Date | 25 September 1962 |
| Budget | $10,000,000 |
| Tagline | 42 STARS IN THE LONGEST DAY |
| Genre | Action, Drama, History, War |
| Country | USA |
| Filming Locations | Calvados, France |
| Language | English, German, French |
| Sound Mix | 4-Track Stereo, 70 mm 6-Track |
| Color | Black and White |
| Film Type | Feature |
| Film Class | War Epic |
| Niche Genre | Epic |
| Mood | God and Country |
| Themes | Great Battles |
| Tones | Sweeping, Lavish, Rousing, Passionate, Earnest |
| Tags | Against All Odds, Attack, Invasion, Soldier, Territory, War |
The Longest Day is a 1962 war film based on the 1959 history book The Longest Day by Cornelius Ryan, about "D-Day", the Normandy landings on 6 June 1944, during World War II.