In Greek mythology, Crius (Greek: Κριως, Krios, "ram" or "ruler"), also known as Megamedes (Greek: Μεγαμηδες, "great lord"), was one of the Titans who rebelled against the Olympians. He is considered to have presided over constellations.

Crius was one of the sons of Uranus and Gaea. He married Eurybia and fathered Pallas, Perses, and Astraeus.

When planning to overthrow his father, Cronus persuaded Crius, Hyperion, Iapetus, and Coeus to help him with this feat. Cronus had his four brothers grab their father from the four pillars of the world and hold onto him so Cronus could castrate him. In this myth, Crius represented the south pillar.

After the war against Zeus, Crius and his brothers were imprisoned within Tartarus. According to Pindar and Aeschylus, the Titans were eventually released from their prison.

Community content is available under CC-BY-SA unless otherwise noted.