Pertteli (Finnish pronunciation: [ˈpertːeli]); Swedish: S:t Bertils) is a former municipality of Finland.

The municipality had a population of 3,833 (2004-12-31) and covered an area of 156.08 km2 of which 1.93 km2 is water.

Inkere was the administrative center of Pertteli.

Saint Bartholomew is the namesake of the municipality and is the subject of the heraldic shield.

This Western Finland location article is a stub.