Which Titan of light was the father of Helios, Selene, and Eos?

The Titan of light who fathered Helios, Selene, and Eos was Hyperion.

Hyperion was one of the twelve principal Titans, born to Gaia and Uranus. He became the consort of his sister Theia, and their children formed a heavenly trio: Helios personified the Sun, Selene the Moon, and Eos the Dawn. Hyperion’s role is therefore central to the genealogy of Greek celestial deities.

His name is usually understood as meaning “the one above” or “he who travels above.” Hyperion was associated with heavenly light, and ancient poetry sometimes treated him as a solar figure in his own right. In other passages, however, “Hyperion” functions as an epithet of Helios, which can make the family relationships seem confusing.

Later sources generally distinguish father and son clearly: Hyperion is the Titan parent, while Helios is the radiant god who drives the Sun’s chariot. This distinction explains why both figures may be connected with the Sun without being the same character.