Subartonys is a village in Varėna District Municipality, in Alytus County, Lithuania. Subartonys lies at 115 m above sea level. It has 44 inhabitants (2021). The nearest city is Alytus, 23 km to the northwest. Among the landmarks around are Grūtas Park (22 km), Church of the Assumption, Merkinė (5.1 km) and Church of the Holy Trinity (16.1 km).