Jezioro [jɛˈʑɔrɔ] is a village in the administrative district of Gmina Markusy, within Elbląg County, Warmian-Masurian Voivodeship, in northern Poland. It lies approximately 3 kilometres (2 mi) north of Markusy, 3 km (2 mi) south-west of Elbląg, and 80 km (50 mi) north-west of the regional capital Olsztyn.