Cognomen Sergio Eustaquio (Sergio Eustaquio 
) , worldwide, is an extremely rare family name. The family name Sergio Eustaquio is habitual in Latin America and the Caribbean, particularly Chile, where it is a very rare surname. More frequently, Sergio Eustaquio is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sergio Eustaquio | Peru, Chile, Brazil |