Leśno [ˈlɛɕnɔ] is a village in the administrative district of Gmina Szemud, within Wejherowo County, Pomeranian Voivodeship, in northern Poland. It lies approximately 7 kilometres (4 mi) south-east of Szemud, 18 km (11 mi) south of Wejherowo, and 24 km (15 mi) west of the regional capital Gdańsk.

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