Markuszewo [markuˈʂɛvɔ] is a settlement in the administrative district of Gmina Łukta, within Ostróda County, Warmian-Masurian Voivodeship, in northern Poland. It lies approximately 5 kilometres (3 mi) south-west of Łukta, 11 km (7 mi) north-east of Ostróda, and 31 km (19 mi) west of the regional capital Olsztyn.