Garczyn is a village in the administrative district of Gmina Liniewo, within Kościerzyna County, Pomeranian Voivodeship, in northern Poland. It lies approximately 4 kilometres (2 mi) south of Liniewo, 19 km (12 mi) south-east of Kościerzyna, and 45 km (28 mi) south-west of the regional capital Gdańsk.