Surname Sergio Hernaldo (Sergio Hernaldo 
) , all over the world, is a very rare family name. The family name Sergio Hernaldo is habitual in Latin America and the Caribbean, particularly Chile, where it is a very rare surname. More frequently, Sergio Hernaldo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sergio Hernaldo | Chile, Peru |