The Battle of Amorgos was one of the naval battles of the Lamian War (323–322 BC), fought between the Macedonian navy under Cleitus the White and the Athenian navy under Euetion. Although few details are known, it was a clear Athenian defeat, although the Athenians seem to have suffered few losses. Regarded as the decisive naval battle of the war, it signalled the end of Athenian thalassocracy and political independence.