The name Thea is a girl's name of Greek origin meaning "goddess, godly". Thea is a diminutive of names ending in -thea, including Dorothea, Althea, and Anthea. It is also the Anglicized spelling of Theia, the Titan of sight, goddess of light, and mother of the moon. She was the consort of Hyperion, and mother of Helios, Selene, and Eos. Whether pronounced THEE-a or THAY-a or TAY-a, Thea presents an appealing artistic image, sensitive and serene.