Medeon (Greek: Μεδεών) is a former municipality in Aetolia-Acarnania, West Greece, Greece.

Since the 2011 local government reform, it has been part of the municipality of Aktio-Vonitsa, of which it is a municipal unit.

[2] The municipal unit has an area of 213.217 km2.

The seat of the municipality was in Katouna.

The municipal unit Medeon is subdivided into the following communities (constituent villages in brackets): This Western Greece location article is a stub.