There are several uses of the word eon or Eon.

• An eon is a period of time in geology.
• The gnostic term aeon.
• The musician Ian B. Loveday has released recordings of techno music under the name Eon .
• EON Productions, the makers of the James Bond films.
• Eon AG, an energy company in Germany.
• Eon is a novel by Greg Bear
• Eon is a swedish role-playing game