Viro is a village in Setomaa Parish, Võru County in Estonia.
According to the 2011 census, the village had 3 inhabitants, all Estonians.
In 2020, the village was 0.3km<sup>2</sup><small>(0.1m<sup>2</sup>)</small>
There was a chapel in the village. A limestones cross, probably erected in the 15th century, marks its location.
In 2000, there were 4 inhabitants.
Before the administrative reform of Estonian local governments in 2017, the village belonged to Meremäe Parish.