Aion may refer to:

• Aion (band), a Polish band
• Aion (deity), was a minor Anatolian deity in classical times
  • Aion: Researches into the Phenomenology of the Self, a book titled after this deity by Carl Jung
• Aion (computer game), an MMORPG under development by NCsoft
• Aion (album), a 1990 album by Dead Can Dance
• Aion (CMX album), a 2003 album
• Aion (Chrono Crusade), the main villain in the anime adaptation of Chrono Crusade
• Anterior ischemic optic neuropathy (AION), a medical condition involving loss of vision
• Cleverpath AION Business Rules Expert, a programming language, originally AION

See also

• Aeon (disambiguation)

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