Aristodemus (Greek: Ἀριστόδημος; c. 550 – c. 490 BC), nicknamed Malakos (meaning "soft" or "malleable" or possibly "effeminate"), was a strategos and then tyrant of Cumae in Magna Graecia. As a strategos, he twice defeated Etruscan armies. He gained popularity amongst the people of Cumae due to his opposition to the city's aristocracy and his proposals to more fairly share land and to forgive debts. He was eventually successful in overthrowing the aristocratic faction, then he became a tyrant himself. He was assassinated by the aristocratic faction around 490 BC.