Polycrates (disambiguation)

Polycrates (Ancient Greek: Πολυκράτης, Polykratēs) is the name of:

• Polycrates, tyrant of Samos from c. 538 BC to 522 BC
• Polycrates (sophist) (c. 440-370 BC), author of paradoxical encomia and an Accusation of Socrates
• Polycrates of Ephesus (fl. c. AD 130-196), bishop