Kozin [ˈkɔʑin] is a village in the administrative district of Gmina Czarna Dąbrówka, within Bytów County, Pomeranian Voivodeship, in northern Poland. It lies approximately 5 kilometres (3 mi) north-east of Czarna Dąbrówka, 29 km (18 mi) north of Bytów, and 66 km (41 mi) west of the regional capital Gdańsk.