Viro may refer to:
People
- Viro Small, an African American wrestler
- Oleg Viro, a Russian mathematician
- Viro, the Catholicos of the Caucasian Albanian Church in the early 7th century
Places
- Viro, the Finnish-language name for Estonia
- Porto Viro, a municipality in Veneto, Italy
- Viro, a village in Setomaa Parish, Võru County, Estonia
Other uses
- Viro, a Croatian sugar company
- Viro, a fictional character in the manga series Elemental Gelade