a war lasting from 267 B.C. to 261 B.C. between Macedonia and some of the Greek poleis under its sway. The Greek forces, which consisted of armies from Athens, Sparta, other former members of the Peloponnesian League, and Epirus, were supported by Egypt. The Chremonidean War took its name from Chremonides, an Athenian who helped instigate the conflict.
In the end, the Greek city-states were defeated. The Macedonians seized Corinth and routed the Spartans on the Isthmus of Corinth. In 263–262 the Macedonians laid seige to Athens and, despite prolonged resistance by the Athenians, occupied the city and the harbor of Piraeus. Athens was placed under a Macedonian vicegerent. In 261, Chremonides fled to Egypt. The anti-Macedonian alliance disintegrated, and the supremacy of Macedonia was strengthened.