Lubiewo [luˈbjɛvɔ] is a village in the administrative district of Gmina Mikołajki, within Mrągowo County, Warmian-Masurian Voivodeship, in northern Poland. It lies approximately 4 kilometres (2 mi) north-west of Mikołajki, 17 km (11 mi) east of Mrągowo, and 69 km (43 mi) east of the regional capital Olsztyn.