Lasowiec [laˈsɔvjɛt͡s] is a settlement in the administrative district of Gmina Mrągowo, within Mrągowo County, Warmian-Masurian Voivodeship, in northern Poland. It lies approximately 3 kilometres (2 mi) north-west of Mrągowo and 52 km (32 mi) east of the regional capital Olsztyn.