Dzietrzychowo [d͡ʑɛtʂɨˈxɔvɔ] is a village in the administrative district of Gmina Sępopol, within Bartoszyce County, Warmian-Masurian Voivodeship, in northern Poland, close to the border with the Kaliningrad Oblast of Russia. It lies approximately 9 kilometres (6 mi) north-east of Sępopol, 22 km (14 mi) east of Bartoszyce, and 71 km (44 mi) north-east of the regional capital Olsztyn.