Argaeus II (Ancient Greek: Ἀργαῖος, romanized: Argaios) was a pretender to the Macedonian crown.
[2] With the assistance of the Illyrians, Argaeus II expelled King Amyntas III from his dominions in 393 BC and kept possession of the throne for about a year.
With the aid of the Thessalians, Amyntas III later succeeded in expelling Argaeus II and recovering a part of his kingdom in 392 BC.
This Argaeus had persuaded the Athenians to support his claim to the Macedonian throne, but Philip II, who had just succeeded to the regency of the kingdom, persuaded the Athenians to remain inactive.
With a force of mercenaries, some Macedonian exiles and a number of Athenian troops (who were permitted to join the Macedonians by their general, Manlias), Argaeus made an attempt to take Aegae, but was repulsed.