Słajszewko [swai̯ˈʂɛfkɔ] is a settlement in the administrative district of Gmina Choczewo, within Wejherowo County, Pomeranian Voivodeship, in northern Poland. It lies approximately 8 kilometres (5 mi) west of Choczewo, 36 km (22 mi) north-west of Wejherowo, and 71 km (44 mi) north-west of the regional capital Gdańsk.

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