Pyllini (Greek: Πυλλήνη or Πυλήνη) 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 seat of the municipality was in Simos.

The municipal unit Pyllini is subdivided into the following communities (constituent villages in brackets):

This Western Greece location article is a stub.