In Greek mythology, Orithyia or Oreithyia (/ɒrɪˈθaɪ.ə/; Ancient Greek: Ὠρείθυια Ōreithuia; Latin: Ōrīthyia) was an Athenian princess who was raped by Boreas, the north wind, and gave birth to the twin Boreads, Zetes and Calaïs.