Cognomen Gardelio (Gardelio 
) , worldwide, is a very rare last name. The cognomen Gardelio is characteristic of Brazil, where it is an extremely rare surname, Mexico, and the United States. More prevalently, Gardelio is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gardelio | Philippines, Italy, Brazil, Mexico, Ecuador |