|Administrative region||West Greece|
|• Municipal unit||124.0 km2 (47.9 sq mi)|
|• Municipal unit||857|
|• Municipal unit density||6.9/km2 (18/sq mi)|
|Time zone||UTC+2 (EET)|
|• Summer (DST)||UTC+3 (EEST)|
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 municipal unit has an area of 123.966 km2. Population 857 (2011). The seat of the municipality was in Simos.
The municipal unit Pyllini is subdivided into the following communities (constituent villages in brackets):