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- Operation Overlord, codename for the invasion of Normandy by Allied forces during World War II
- Mount Overlord, an extinct volcano in Antarctica
- Overlord meme, an Internet meme relating mock submission
- Ariakon Overlord, a paintball pistol
- Arch Linux, the code name for version 2008.06
- Overlord system, popular name for structure of British government 1951-3
- The HalloWeekends Overlord, the commander of the Screamsters during HalloWeekends at Cedar Point amusement park.
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