Sarnowo [sarˈnɔvɔ] is a settlement in the administrative district of Gmina Kartuzy, within Kartuzy County, Pomeranian Voivodeship, in northern Poland. It lies approximately 5 kilometres (3 mi) north of Kartuzy and 29 km (18 mi) west of the regional capital Gdańsk.

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