Sasinko [saˈɕinkɔ] is a settlement in the administrative district of Gmina Choczewo, within Wejherowo County, Pomeranian Voivodeship, in northern Poland. It lies approximately 10 kilometres (6 mi) west of Choczewo, 38 km (24 mi) north-west of Wejherowo, and 73 km (45 mi) north-west of the regional capital Gdańsk.

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