Barsūniškės is a village in Elektrėnai Municipality, in Vilnius County, Lithuania. Barsūniškės lies at 122 m above sea level. The nearest city is Vilnius, 33 km to the east. Among the landmarks around are Trakai Island Castle (21 km), Vilnius Cathedral (32 km) and National Museum of Lithuania (32 km). Among the natural features are Alkai oak (1.9 km) and Gojus oak (4.6 km).