Piotrowo [pjɔˈtrɔvɔ] is a village in the administrative district of Gmina Obrzycko, within Szamotuły County, Greater Poland Voivodeship, in west-central Poland. It lies approximately 4 kilometres (2 mi) west of Obrzycko, 15 km (9 mi) north-west of Szamotuły, and 46 km (29 mi) north-west of the regional capital Poznań.