Piotrowo [pjɔˈtrɔvɔ] is a village in the administrative district of Gmina Somonino, within Kartuzy County, Pomeranian Voivodeship, in northern Poland. It lies approximately 10 kilometres (6 mi) south of Somonino, 16 km (10 mi) south of Kartuzy, and 38 km (24 mi) south-west of the regional capital Gdańsk.

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