Family name Viello (Viello 
) , across the world, is a very rare last name. The surname Viello is characteristic of Italy, where it is a rare surname, the United States, where it is an extremely rare surname, and Brazil. Very seldom, Viello is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Viello | Italy, Peru, Brazil, United States |