Leśnia [ˈlɛɕɲa] is a village in the administrative district of Gmina Dębnica Kaszubska, within Słupsk County, Pomeranian Voivodeship, in northern Poland. It lies approximately 8 kilometres (5 mi) east of Dębnica Kaszubska, 21 km (13 mi) south-east of Słupsk, and 88 km (55 mi) west of the regional capital Gdańsk.

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