Ostatni Grosz [ɔsˈtatni ˈɡrɔʂ] is a settlement in the administrative district of Gmina Cedry Wielkie, within Gdańsk County, Pomeranian Voivodeship, in northern Poland. It lies approximately 12 kilometres (7 mi) north-east of Pruszcz Gdański and 11 km (7 mi) south-east of the regional capital Gdańsk.

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