In Greek mythology, Antiope /ænˈtaɪ.əpi/ or Antiopa (Ancient Greek: Ἀντιόπη derived from αντι anti "against, compared to, like" and οψ ops "voice" or means "confronting") may refer to the following * Antiope, daughter of King Belus of Egypt and possibly, Achiroe, naiad daughter of the river-god Nilus. She was the sister of Agenor II, Phineus, Aegyptus, Danaus, Cepheus and Ninus. By her uncle, King Agenor I of Tyre, Antiope became the mother of Cadmus and his siblings. In some accounts, this daughter of Belus was called . * Antiope, daughter of Aeolus, by whom Poseidon begot Boeotus and Hellen (Aeolus). She was also called Arne or Melanippe, in some accounts. * Antiope, nymph of Pieria and the mother, by Pierus, of the Pierides, nine sisters who challenged the muses and, on their defeat,