The Thirty Tyrants (Ancient Greek: οἱ τριάκοντα τύραννοι, hoi triákonta týrannoi) were an oligarchy that briefly ruled Athens from 404 BC to 403 BC. Installed into power by the Spartans after the Athenian surrender in the Peloponnesian War, the Thirty became known for their tyrannical rule, first being called "The Thirty Tyrants" by Polycrates.[1] Although they maintained power for only eight months, their reign resulted in the killing of 5% of the Athenian population, the confiscation of citizens' property, and the exile of other democratic supporters.[2]