ESO (disambiguation)

Look up eso, eső, or eso- in Wiktionary, the free dictionary.

The European Southern Observatory is an astronomical research organisation.

ESO may also refer to:

• Employee stock option (also: executive stock option)
• Ether Saga Odyssey, a fantasy massively multiplayer online role-playing game
• The Elder Scrolls Online, a fantasy massively multiplayer online role-playing game
• Existential second-order logic
• ESO (motorcycles)
• Eso (town), Orhionmwon, Edo State, Nigeria