Kosowa Niwa [kɔˈsɔva ˈniva] is a village in the administrative district of Gmina Czersk, within Chojnice County, Pomeranian Voivodeship, in northern Poland. It lies approximately 16 kilometres (10 mi) south-west of Czersk, 16 km (10 mi) east of Chojnice, and 92 km (57 mi) south-west of the regional capital Gdańsk.

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