Radusz [ˈraduʂ] is a village in the administrative district of Gmina Kołczygłowy, within Bytów County, Pomeranian Voivodeship, in northern Poland. It lies approximately 2 kilometres (1 mi) north of Kołczygłowy, 23 km (14 mi) north-west of Bytów, and 93 km (58 mi) west of the regional capital Gdańsk.

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