Overlord

In the feudal system an overlord sometimes ruled over mesne lords 

Overlord may also refer to:

 History and geography 
 Overlord (feudalism)
 Operation Overlord, codename for the invasion of Normandy by Allied forces during World War II
 Overlord system, popular name for structure of British government 1951–1953
 Mount Overlord, an extinct volcano in Antarctica

 Internet and software 
 Overlord meme, an Internet meme relating to mock submission
 Overlord, an open-source middleware project managed by Red Hat, for JBoss Fuse Service Works-based governance (management, monitoring and administration) of computer systems

 Music 
 Overlord (band), a Brooklyn-based indie pop band led by George Pasles