Zastawno [zasˈtavnɔ] is a village in the administrative district of Gmina Młynary, within Elbląg County, Warmian-Masurian Voivodeship, in northern Poland. It lies approximately 6 kilometres (4 mi) west of Młynary, 19 km (12 mi) north-east of Elbląg, and 72 km (45 mi) north-west of the regional capital Olsztyn.