Ingå (Inkoo in Finnish) is a municipality of Finland.
It is located in the province of Southern Finland and is part of the Uusimaa region. The municipality has a population of 5,080 (2003) and covers an area of 357.49 km² of which 9.68 km² is water. The population density is 14.2 inhabitants per km².
The municipality is bilingual, with majority being Swedish and minority Finnish speakers.