Globally, Valterio (Valterio 
) is a rare masculine first name. The forename Valterio is habitual in Italy, where it is a rare male name, and Brazil, where it is a very rare masculine name. Also, Valterio is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Valterio | Argentina, United States, Switzerland, Italy, Brazil |