Lubieszynek [lubjɛˈʂɨnɛk] is a village located in the administrative district of Gmina Nowa Karczma within Kościerzyna County, Pomeranian Voivodeship in northern Poland. It lies approximately 3 kilometres (2 mi) south of Nowa Karczma, 16 km (10 mi) east of Kościerzyna, and 40 km (25 mi) south-west of the regional capital Gdańsk.

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