Särkisalo (Finby in Swedish) 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 723 (2003) and covers an area of 82.85 km² of which 1.06 km² is water. The population density is 8.8 inhabitants per km².

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