Also known as Hellenic War (323 BC - 322 BC) was a war between a coalition of Greek cities including Athens and the Aetolian League against Macedon and its ally Boeotia. The war ended with a Macedonian victory.

Alexander the Great died in 323 BC, leaving the empire to be governed by his generals for his unborn son, Alexander IV. After hearing these news, Athens revolted against the control of Macedon and took the opportunity to form a coalition of Greek cities in an attempt to detach Greece from Macedon. The Greek forces commanded by Leosthenes had some initial successes defeating the Boeotians at Plataea before advancing north where at Thermopylae they defeated the Macedonian army of the regent Antipater. The defeated Macedonians fled to Lamia where they were besieged by the Greeks as Antipater waited for reinforcements to arrive from Asia.

The success of the Greeks on land was offset by the defeats of the Athenian fleet at the Hellespont and Amorgos by the Macedonian navy. The Macedonians, now with control of the sea were able to transfer troops to Europe. Though the Greeks defeated the Macedonian reinforcements at Rhamnus, the Macedonians were able to leave from Lamia and unite with the remnants of the defeated army. The combined Macedonian forces were assisted by the arrival of more troops from Asia and defeated the Greeks at the Crannon and effectively ended the revolt of the Greeks.

After the war, Antipater, Macedon viceroy, made peace treaties with the rebellious cities separately and on generous terms. The Athenians were made to dissolve their government and establish a plutocratic system in its stead, whereby only those possessing 2,000 drachmas or more could remain citizens. This was done in the belief that the poorer elements of the society had compelled the war in the first place. Hypereides was condemned to death, fled, and was probably captured and killed in Euboea. Demosthenes was forced to commit suicide by Antipater for his role in supporting the Hellenic War.