All over the world, Sergio Hernaldo (Sergio Hernaldo 
) is a very rare boy's forename. The given name Sergio Hernaldo is characteristic of Latin America and the Caribbean, particularly Chile, where it is a rare masculine name. Very seldom, Sergio Hernaldo is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Sergio Hernaldo | Chile, Peru |