埃托利亚同盟是古希腊的一个联邦国家，以希腊中部的埃托利亚为中心。同盟创立于前370年以反对马其顿和亚该亚同盟。前290年，它在第一次马其顿战争与罗马结盟占领了德尔斐，版图持续扩张。前3世纪末，它控制了阿提卡外的整个中希腊。公元前189年，同盟被打败，被迫与罗马签订了合约。这时埃托利亚同盟已名存实亡了。

For the English football league, see Aetolian League (football).

The Aetolian League (also transliterated as Aitolian League) was a confederation of tribal communities and cities in ancient Greece centered on Aetolia in central Greece. It was established, probably during the early Hellenistic era, in opposition to Macedon and the Achaean League. Two annual meetings were held in Thermika and Panaetolika. It occupied Delphi from 290 BC and gained territory steadily until, by the end of the 3rd century BC, it controlled the whole of central Greece outside Attica and Boeotia. At its peak, the league's territory included Locris, Malis, Dolopes, part of Thessaly, Phocis, and Acarnania. In the latter part of its power, certain Greek city-states joined the Aetolian League such as the Ardadian cities of Mantineia, Tegea, Figaleia and Kydonia on Crete.