Derc

Derc [dɛrt͡s] (German: Derz) is a village in the administrative district of Gmina Jeziorany, within Olsztyn County, Warmian-Masurian Voivodeship, in northern Poland. It lies approximately 7 kilometres (4 mi) west of Jeziorany and 21 km (13 mi) north-east of the regional capital Olsztyn.

While traditionally Prussian, with the Second Peace of Thorn in 1466 the area became part of the Kingdom of Poland until 1772; 1772-1945 Kingdom of Prussia and Germany (East Prussia). Following World War II the native German populace was expelled and replaced by Poles.

The village has a population of 660.