Zamostne [zaˈmɔstnɛ] is a village in the administrative district of Gmina Wejherowo, within Wejherowo County, Pomeranian Voivodeship, in northern Poland. It lies approximately 11 kilometres (7 mi) north-west of Wejherowo and 46 km (29 mi) north-west of the regional capital Gdańsk.

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