Piotraszewo [pjɔtraˈʂɛvɔ] is a village in the administrative district of Gmina Dobre Miasto, within Olsztyn County, Warmian-Masurian Voivodeship, in northern Poland. It lies approximately 9 kilometres (6 mi) north of Dobre Miasto and 33 km (21 mi) north of the regional capital Olsztyn.