Worldwide, Viio (Viio 
) is a rare gender-neutral forename. The first name Viio is characteristic of South-eastern Asia, particularly Indonesia, where it is a very rare unisex name. Likewise, Viio is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Viio | Sweden, Indonesia, Norway, Belgium, Finland |
| viio aitsam Estonian journalist, EE (b. 1955) |
|