Pyllini ( or ààûîý÷) is a former municipality in Aetolia-Acarnania, West Greece, Greece. Since the 2011 local government reform it is part of the municipality Nafpaktia, of which it is a municipal unit. The municipal unit has an area of 123.966 km<sup>2</sup>. Population 676 (2021). The seat of the municipality was in Simos.
The municipal unit Pyllini is subdivided into the following communities (constituent villages in brackets):