Pleuron was a city in ancient Aetolia, Greece. The name refers to two settlements, the older of which was at the foot of Mount Curium between the river Acheloos and the river Evenos, and was mentioned by Homer in the Catalogue of Ships in the Iliad. The territory of Pleuron was called Pleuronia. The ruins of this more ancient city are 1.5 km to the southeast of the newer one. The circuit wall exhibits "the large roughly shaped stones and small stones in the interstices which are the characteristics of Cyclopean masonry."