Osowo Duże [ɔˈsɔvɔ ˈduʐɛ] is a village in the administrative district of Gmina Lipnica, within Bytów County, Pomeranian Voivodeship, in northern Poland. It lies approximately 4 kilometres (2 mi) south-west of Lipnica, 20 km (12 mi) south-west of Bytów, and 93 km (58 mi) south-west of the regional capital Gdańsk.

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