Koślinka [kɔˈɕlinka] is a settlement in the administrative district of Gmina Czersk, within Chojnice County, Pomeranian Voivodeship, in northern Poland. It lies approximately 7 kilometres (4 mi) east of Czersk, 36 km (22 mi) east of Chojnice, and 75 km (47 mi) south-west of the regional capital Gdańsk.

For details of the history of the region, see History of Pomerania.