Gać Leśna (Polish: [ɡat͡ɕ ˈlɛɕna]) is a village in the administrative district of Gmina Słupsk, within Słupsk County, Pomeranian Voivodeship, in northern Poland. It lies approximately 12 kilometres (7 mi) west of Słupsk and 116 km (72 mi) west of the regional capital Gdańsk.

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