Lysander ( or ; died 395 BCE, , Lýsandros) was a Spartan admiral who commanded the Spartan fleet in the Hellespont which defeated the Athenians at Aegospotami in 405 BCE. The following year, he was able to force the Athenians to capitulate, bringing the Peloponnesian War to an end; he organized the dominion of Sparta over Greece in the last decade of his life.