|Look up Theia in Wiktionary, the free dictionary.|
Theia was a Greek goddess, a Titan who gave birth to the Moon goddess, Selene.
Theia may also refer to:
- Theia (horse), a racehorse
- Theia (planet), a planet that may have been involved in the creation of the Moon
- Teia, last king of the Ostrogoths in Italy
- Telescope for Habitable Exoplanets and Interstellar/Intergalactic Astronomy, a proposed space telescope