The Vilnia (also Vilnelė; Belarusian: Вільня, Vilnia [ˈvʲilʲnʲa]; Polish: Wilejka, Wilenka) is a river in Lithuania. Its source is near the village of Vindžiūnai, 5 km south of Šumskas, at the Lithuanian-Belarusian border. The Vilnia is 79.6 km long and its basin covers 624 sq. km. For 13 km its flow makes the Belarus-Lithuania border, and the remaining 69 km are in Lithuania until it flows into the Neris River at Vilnius.