Peleniškės is a village in Trakai District Municipality, in Vilnius County, Lithuania. Peleniškės lies at 154 m above sea level. It has 60 inhabitants (2021). The nearest city is Vilnius, 27 km to the east. Among the landmarks around are Trakai Island Castle (6.2 km), Vilnius Cathedral (28 km) and National Museum of Lithuania (28 km).