Grzybno [ˈɡʐɨbnɔ] is a settlement in the administrative district of Gmina Stara Kiszewa, within Kościerzyna County, Pomeranian Voivodeship, in northern Poland. It lies approximately 11 kilometres (7 mi) south-west of Stara Kiszewa, 22 km (14 mi) south of Kościerzyna, and 62 km (39 mi) south-west of the regional capital Gdańsk.

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