Mikniškės is a village in Trakai District Municipality, in Vilnius County, Lithuania. Mikniškės lies at 157 m above sea level. It has 65 inhabitants (2021). The nearest city is Vilnius, 27 km to the east. Among the landmarks around are Trakai Island Castle (4.8 km), Vilnius Cathedral (27 km) and National Museum of Lithuania (27 km).