Korsnäs is a municipality in Finland, located on the west coast of the country.

Korsnäs is a bilingual municipality with Finnish and Swedish as its official languages.

The three largest islands are Halsön, Bredskäret and Södra Björkön, all used as important recreation areas for urban dwellers.

[8] Some place names of Finnish origin (such as Molpe (Moikipää) and Taklax (Takalaksi)) indicate a Finnish-speaking presence in the 13th century, although it is disputed if these people (probably from Häme) only used the area for fishing on a seasonly basis[9] or if they established a proper, but sparse, settlement.

Korsnäs is a bilingual municipality with Finnish and Swedish as its official languages.