The Epirote League (Northwest Greek: Κοινὸν Ἀπειρωτᾶν, Koinòn Āpeirōtân; Attic: Κοινὸν Ἠπειρωτῶν, Koinòn Ēpeirōtôn) was an ancient Greek coalition, or koinon, of Epirote tribes.
The coalition was established between 370 and 320 BC (firstly as the Molossian League in 370 BC), which helped unify the three main tribes of Epirus (i.e. Molossians, Thesprotians, and Chaonians). The political, economic, and cultural center of the Epirote League was Dodona. Dodone was the religious, political and cultural centre of the Molossian League and later of the Epirote League. Pyrrhus of Epirus became leader of the League in 297 BC. When King Agathocles of Syracuse conquered Corcyra, he offered the island as dowry to his daughter Lanassa on her marriage to Pyrrhus of Epirus in 295 BC. The island then became a member of the Epirote League. It was then perhaps that the settlement of Cassiope was founded to serve as a base for the king of Epirus' expeditions. The island remained in the Epirote League until 255 BC when it became independent after the death of Alexander II of Epirus. The league was defeated by the Illyrians during the Invasion of Epirus and the Battle of Phoenice, forcing them to enter into an alliance with Teuta to prevent further attacks. This alliance made the Epirotes hostile to the Acheaens and Aetolians, but presumably ended following Illyrian defeat in the First Illyrian War.