Achaea or Achaia (; ), was a province of the Roman Empire, consisting of the Peloponnese, Attica, Boeotia, Euboea, the Cyclades and parts of Phthiotis, Aetolia-Acarnania and Phocis. In the north, it bordered on the provinces of Epirus vetus and Macedonia. The region was annexed by the Roman Republic in 146 BC following the sack of Corinth by the Roman general Lucius Mummius, who was awarded the cognomen ""Achaicus"" ("conqueror of Achaea"). Initially part of the Roman province of Macedonia, it was made into a separate province by Augustus.