In Greek mythology, the name Polypheides or Polyphides (/ˌpɒlɪˈfaɪdiːz/; Ancient Greek: Πολυφείδης) may refer to:

• Polypheides, son of Mantius and brother of Cleitus. He was granted prophetic skills by Apollo and became the best seer among mortals after the death of Amphiaraus; he dwelt in Hyperesia and had a son Theoclymenus.^[1] A slightly different account of his life was given by Pherecydes:^[2] according to it, Polypheides married Aechme, daughter of Haemon, and settled in Eleusis, where two sons, Theoclymenus and Harmonides, were born to him.
• Polypheides, lord of Sicyon, to whom Agamemnon and Menelaus were entrusted by their nurse or sent by Aegisthus after the murder of Atreus. He further sent them to Oeneus.^[3]

• Apollodorus, The Library with an English Translation by Sir James George Frazer, F.B.A., F.R.S. in 2 Volumes, Cambridge, MA, Harvard University Press; London, William Heinemann Ltd. 1921. ISBN 0-674-99135-4. Online version at the Perseus Digital Library. Greek text available from the same website.
• Homer, The Odyssey with an English Translation by A.T. Murray, PH.D. in two volumes. Cambridge, MA., Harvard University Press; London, William Heinemann, Ltd. 1919. ISBN 978-0674995611. Online version at the Perseus Digital Library. Greek text available from the same website.
• Tzetzes, John, Book of Histories, Book I translated by Ana Untila from the original Greek of T. Kiessling's edition of 1826. Online version at theio.com