Polybus is an ancient Greek male name used by several mythological and real people:

• Polybus (physician) was an ancient Greek physician.
• Polybus (King of Corinth) was a mythical Corinthian king.
• Polybus (King of Sicyon) - A King of Sicyon, son of Hermes and Chthonophyle, daughter of the eponym of Sicyon. He inherited the throne of Sicyon from his grandfather; he had a daughter Lysimache or Lysianassa whom he married to Talaus of Argos. His successor was his grandson Adrastus.
• Polybus (King of Thebes) - A King of Thebes (in Egypt). Menelaus and Helen stayed in his court for a while after the Trojan War.
• The father of a suitor, Eurymachus, of The Odyssey, who was killed by Odysseus once he returned.
• A son of Antenor and Theano, killed in the Trojan war by Neoptolemus

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