Vilūnai is a village in Trakai District Municipality, in Vilnius County, Lithuania. Vilūnai lies at 119 m above sea level. The nearest city is Alytus, 39 km to the west. Among the landmarks around are Trakai Island Castle (25 km), Basilica of the Visitation of the Blessed Virgin Mary (25 km) and Trakai Kenesa (25 km). Among the natural features are A. Mickevičius oak (3.1 km).