Dembina is a village in Trakai District Municipality, in Vilnius County, Lithuania. Dembina lies at 139 m above sea level. The nearest city is Alytus, 32 km to the west. Among the landmarks around are Trakai Island Castle (33 km), Raižiai Mosque (21 km) and Church of the Assumption in Pivašiūnai (9.4 km).