Bolszewo is a village in the administrative district of Gmina Wejherowo, within Wejherowo County, Pomeranian Voivodeship, in northern Poland. It lies approximately 6 kilometres north-west of Wejherowo and 42 km north-west of the regional capital Gdańsk. It is located in the ethnocultural region of Kashubia in the historic region of Pomerania.