Dunajki [duˈnai̯ki] is a settlement in the administrative district of Gmina Dziemiany, within Kościerzyna County, Pomeranian Voivodeship, in northern Poland. It lies approximately 3 kilometres (2 mi) west of Dziemiany, 21 km (13 mi) south-west of Kościerzyna, and 72 km (45 mi) south-west of the regional capital Gdańsk.

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