Eidos may refer to:

  • Eidos (philosophy), a Greek term meaning "form" "essence", "type" or "species". See Plato's theory of forms and Aristotle's theory of universals
  • Eidos Interactive, a former name of British video game publisher Square Enix Europe
    • Eidos Hungary, a defunct Hungarian development studio formerly of Eidos Interactive
    • Eidos Montréal, an active Canadian development studio of Square Enix Europe
    • Eidos Shanghai, an active Chinese development studio of Square Enix Europe
  • EidosMedia, an Italian software house
  • Eidos, an Italian menswear brand owned by Isaia

See alsoEdit