Zeo can refer to:
- Dodge ZEO, an electric concept car
- Zeos, a home computer company
- Zeos, a planet in the Doctor Who serial The Armageddon Factor
- Power Rangers: Zeo, a television series
- Zope Enterprise Objects, a storage implementation in a Zope Object Database
- A character in the anime Beyblade
- Zeo, Inc., a company that makes sleep products
- Zamenhof-Esperanto object (ZEO), an object commemorating Esperanto or its creator L. L. Zamenhof