In Egyptian mythology, Geb is the earth god lying beneath Nut.
Geb belongs to the Heliopolitan Ennead, the nine-deity system associated with Heliopolis. He is the son of Shu, god of air, and Tefnut, goddess of moisture, and the brother and husband of Nut, the sky goddess. In the creation story, Shu separates Geb and Nut, creating the space between earth and sky.
Egyptians connected Geb with the fertile ground that produced crops, as well as with earthquakes, which were sometimes imagined as his laughter. He could also be linked with vegetation, subterranean waters, snakes, kingship, and the realm of the dead. His position beneath Nut reflects the Egyptian cosmic image of the earth below the arched heavens.
Geb is often confused with Osiris because both are connected with fertility, kingship, and the underworld. Osiris, however, is primarily the god of the dead and the afterlife, while Geb personifies the earth itself. In later Greco-Roman Egypt, Geb was sometimes identified with the Greek Titan Cronus.