Surname Sergio Hernan (Sergio Hernan 
) , worldwide, is quite a rare cognomen. The last name Sergio Hernan is characteristic of Chile, where it is quite a common surname, and Spain, where it is a very rare surname. More prevalently, Sergio Hernan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sergio Hernan | Spain, Argentina, Ecuador, Chile, Peru |