波利克拉特斯（或译波利克拉底，英语：Polycrates，希腊语：Πολυκράτης），古希腊萨摩斯岛的著名僭主。大约前538年开始统治，前522年去世。

Polycrates (/pəˈlɪkrəˌtiːz/; Greek:Πολυκράτης), son of Aeaces, was the tyrant of Samos from c. 538 BC to 522 BC.

He took power during a festival of Hera with his brothers Pantagnotus and Syloson, but soon had Pantagnotus killed and exiled Syloson to take full control for himself. He then allied with Amasis II, pharaoh of Egypt, as well as the tyrant of Naxos Lygdamis. With a navy of 100 penteconters and an army of 1,000 archers, he plundered the islands of the Aegean Sea and the cities on the Ionian coast of Asia Minor, defeating and enslaving the navies of Lesbos and Miletus. He also conquered the small island of Rhenea, which he chained to nearby Delos as a dedication to Apollo.