Pargas (Parainen in Finnish) is a municipality of Finland.

It is located in the province of Western Finland and is part of the Finland Proper region. The municipality has a population of 12,001 (2003) and covers an area of 272.79 km² of which 1.19 km² is water. The population density is 44.2 inhabitants per km².

The municipality is bilingual, with majority being Swedish and minority Finnish speakers.