Mniszek [ˈmniʂɛk] is a village in the administrative district of Gmina Karsin, within Kościerzyna County, Pomeranian Voivodeship, in northern Poland. It lies approximately 4 kilometres (2 mi) south-east of Karsin, 27 km (17 mi) south of Kościerzyna, and 70 km (43 mi) south-west of the regional capital Gdańsk.

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