Østermark is a village in Vordingborg Municipality, in the region of Zealand, Denmark. Østermark lies at 19 m above sea level. The nearest city is Næstved, 47 km to the west. Beaches nearby: Råbylille (4.5 km), Råbylille (4.6 km), Vængesgård (4.7 km). Among the landmarks around are Sømarkedyssen (8.0 km), Klekkende Høj (15.7 km) and Kong Asgers Høj (16.2 km). Among the natural features are Aborrebjerg (10.0 km) and Dronningestolen (11.8 km).