Kółeczko [kuˈwɛt͡ʂkɔ] is a village in the administrative district of Gmina Sadlinki, within Kwidzyn County, Pomeranian Voivodeship, in northern Poland. It lies approximately 2 kilometres (1 mi) south-west of Sadlinki, 10 km (6 mi) south-west of Kwidzyn, and 80 km (50 mi) south of the regional capital Gdańsk.

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