Karsin [ˈkarɕin] (German: Karschin, Karßin (1939-1945)) is a village in Kościerzyna County, Pomeranian Voivodeship, in northern Poland. It is the seat of the gmina (administrative district) called Gmina Karsin. It lies approximately 24 kilometres (15 mi) south of Kościerzyna and 69 km (43 mi) south-west of the regional capital Gdańsk.
For details of the history of the region, see History of Pomerania.
The village has a population of 2,200.
Coordinates: 53°54′18″N 17°55′42″E / 53.90500°N 17.92833°E