The Battle of Andros was an obscure naval battle during the Third Syrian War. Despite its numerical superiority, the Egyptian fleet, probably commanded by Sophron of Ephesus, lost to a Macedonian fleet led by Antigonus II Gonatas. The Egyptian captain Ptolemy Andromachou, an illegitimate half-brother of the Pharaoh, lost his ship and crew, barely escaping to Ephesus.