Dulsin [ˈdulɕin] is a village in the administrative district of Gmina Górowo Iławeckie, within Bartoszyce County, Warmian-Masurian Voivodeship, in northern Poland, close to the border with the Kaliningrad Oblast of Russia. It lies approximately 11 kilometres (7 mi) north-east of Górowo Iławeckie, 20 km (12 mi) north-west of Bartoszyce, and 64 km (40 mi) north of the regional capital Olsztyn.

• Anton von Hohberg und Buchwald (1885–1934), owner of Dulzen manor