Conon was an Athenian general at the end of the Peloponnesian War, who led the Athenian naval forces when they were defeated by a Peloponnesian fleet in the crucial Battle of Aegospotami; later he contributed significantly to the restoration of Athens' political and military power.

The Peloponnesian War was an ancient Greek war fought between Athens and Sparta and their respective allies for the hegemony of the Greek world. The war remained undecided for a long time, until the decisive intervention of the Persian Empire in support of Sparta. Led by Lysander, the Spartan fleet, built with Persian subsidies, finally defeated Athens and started a period of Spartan hegemony over Greece.