The Achaean War is an uprising by the Greek Achaean League, an alliance of Achaean and other Peloponnesian states in ancient Greece, against the Roman Republic around 146 BCE, just after the Fourth Macedonian War.

Rome defeats the League swiftly, and as a lesson, they destroy the ancient city of Corinth.

The war ends with Greece's independence taken away, and Greece becomes the Roman provinces of Achaea and Epirus.