Surname Ruben Sergio (Ruben Sergio 
) , in all the world, is a very rare last name. The cognomen Ruben Sergio is characteristic of Latin America and the Caribbean, particularly Chile, where it is a rare surname. More frequently, Ruben Sergio is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ruben Sergio | Spain, Chile, Bolivia, Mexico, Peru |