Pstra Suka [ˈpstra ˈsuka] is a settlement in the administrative district of Gmina Somonino, within Kartuzy County, Pomeranian Voivodeship, in northern Poland. It lies approximately 5 kilometres (3 mi) south-east of Somonino, 10 km (6 mi) south-east of Kartuzy, and 27 km (17 mi) south-west of the regional capital Gdańsk. It is located in the ethnocultural region of Kashubia in the historic region of Pomerania.