Duninówko [duniˈnufkɔ] is a village in the administrative district of Gmina Ustka, within Słupsk County, Pomeranian Voivodeship, in northern Poland. It lies approximately 7 kilometres (4 mi) south of Ustka, 14 km (9 mi) north-west of Słupsk, and 118 km (73 mi) west of the regional capital Gdańsk.

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