Białasowizna [bjawasɔˈvizna] is a village in the administrative district of Gmina Wejherowo, within Wejherowo County, Pomeranian Voivodeship, in northern Poland. It lies approximately 7 kilometres (4 mi) west of Wejherowo and 42 km (26 mi) north-west of the regional capital Gdańsk.

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