Ostrowite [ɔstrɔˈvitɛ] is a village in the administrative district of Gmina Sulęczyno, within Kartuzy County, Pomeranian Voivodeship, in northern Poland. It lies approximately 5 kilometres (3 mi) south-east of Sulęczyno, 29 km (18 mi) south-west of Kartuzy, and 56 km (35 mi) west of the regional capital Gdańsk.

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