Amyntas III (Ancient Greek: Ἀμύντας) was king of the ancient Greek kingdom of Macedonia from 393/2 to 388/7 BC and again from 387/6 to 370 BC. He was a member of the Argead dynasty through his father Arrhidaeus, a son of Amyntas, one of the sons of Alexander I. His most famous son is Philip II, father of Alexander the Great.