Vosiūnai (pronunciation) is a village in the eastern part of Ignalina district in Lithuania. According to the 2011 census, it had 29 residents. It is located 5 kilometres (3.1 mi) east of Navikai, near the border with Belarus. The village is situated on the right bank of the river Dysna. The village has a wooden Blessed Virgin Mary Church (built in 1921).

Together with the neighboring Rimaldiškė, Vosiūnai is the easternmost village in Lithuania.