Crystal Castles was a Canadian electronic music group.
Crystal Castles may also refer to:
- Crystal Castles (album), a 2008 album by the group
- Crystal Castles II, a 2010 album by the group
- III (Crystal Castles album), a 2012 album by the group
- Crystal Castles (video game), a 1983 arcade game
- Crystal Castle, a fictional castle in She-Ra: Princess of Power