Marianowo [marjaˈnɔvɔ] is a village in the administrative district of Gmina Wejherowo, within Wejherowo County, Pomeranian Voivodeship, in northern Poland. It lies approximately 5 kilometres (3 mi) south-east of Wejherowo and 32 km (20 mi) north-west of the regional capital Gdańsk.

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