Piotrowo [pjɔˈtrɔvɔ] is a village in the administrative district of Gmina Lubomino, within Lidzbark County, Warmian-Masurian Voivodeship, in northern Poland. It lies approximately 4 kilometres (2 mi) south of Lubomino, 24 km (15 mi) south-west of Lidzbark Warmiński, and 33 km (21 mi) north-west of the regional capital Olsztyn.

Before 1772 the area was part of Kingdom of Poland. From 1772 to 1945, it was part of Prussia and then East Prussia in Germany.