Czaszkowo [t͡ʂaʂˈkɔvɔ] is a village in the administrative district of Gmina Piecki, within Mrągowo County, Warmian-Masurian Voivodeship, in northern Poland. It lies approximately 3 kilometres (2 mi) south-west of Piecki, 15 km (9 mi) south of Mrągowo, and 55 km (34 mi) east of the regional capital Olsztyn.