Groszki [ˈɡrɔʂki] is a village in the administrative district of Gmina Rybno, within Działdowo County, Warmian-Masurian Voivodeship, in northern Poland. It lies approximately 5 kilometres (3 mi) north-east of Rybno, 25 km (16 mi) north-west of Działdowo, and 54 km (34 mi) south-west of the regional capital Olsztyn.
The village was ceded to Poland after the East Prussian plebiscite in 1920.
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