Overlord

In military history

• Operation Overlord (codename for the Battle of Normandy), the invasion of Normandy by Allied forces during World War II
• Overlord (military acronym)

In fiction

• Overlord (comics), a comic-book supervillain created by Erik Larsen
• Overlord (Transformers), a Transformers character
• Overlord (species), a non-human species in the book Childhood's End by Arthur C. Clarke
• "Invasion of the Capital" / "Over Lord", an episode of the TV series RahXephon with an operation named after the Battle of Normandy

In video gaming

• Overlord (1990 video game) (called Supremacy in Europe), a 1990 strategy computer game
• Overlord (1993 video game), a strategy game for the NES, port of the 1990 computer game
• Overlord (1994 video game), a World War II flight simulator for the Amiga and PC by Rowan Software
• Overlord (2007 video game), an action/adventure game for the PC, PS3 (2008), and Xbox 360
• Overlord: Raising Hell, an expansion to the 2007 game for the PC, PS3 and Xbox 360
• Overlord II, Sequel to Overlord (2007 video game).
• Overlord: Dark Legend Exclusively for Wii
• Overlord: Minions Exclusively for NDS

Other

• Overlord (film), a 1975 film by Stuart Cooper
• Overlord meme, an internet meme relating mock submission
• Evil Overlord List, a list of common errors made by stereotypical villains