Crius or Krios was the god of heavenly constellations. He was the son of Uranus and Gaia. His children were Perses, god of destruction, husband of Asteria and father of Hekate, Astraeus, husband of Eos and father of the Winds and the Planets, and Pallas, husband of Styx and father of Nike, Bia, Zelos and Cratus.

His name means "Ram" and he was associated with the start of the season, because of the constellation Aries which, in Greek mythology, was associated with ram or golden ram. Aries is known for the start of the spring in the northern hemisphere.

Crius was also known as the Pillar of the South pole. He and with his brothers; Iapetus, Hyperion and Coeus, represented the pillars of cardinal points where they held down Uranus as Cronus castrated him.(the heavens) and Gaea (the earth) apart.