Last name Ernesto Sergio (Ernesto Sergio 
) , across the world, is a very rare family name. The surname Ernesto Sergio is characteristic of Latin America and the Caribbean, particularly Chile, where it is a rare surname. More prevalently, Ernesto Sergio is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ernesto Sergio | Argentina, Ecuador, Mexico, Chile, Peru |