Cognomen Roberto Sergio (Roberto Sergio 
) , across the world, is a very rare family name. The surname Roberto Sergio is characteristic of Latin America and the Caribbean, particularly Chile, where it is a rare surname. More frequently, Roberto Sergio is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Roberto Sergio | Chile, Peru, Bolivia, Mexico, Spain |
Cari, Valdivieso Ulloa, Treullan Antillanca, Gragnani Zogbi, Dos Santos, Hernandez, Toro Briceño, Rodriguez, Balmaceda, Gonzalez, Canales, Sziemeister, Zapata, Flores, Vargas, Pulido, Campos, Muñoz, Tello, Lopez, Genis, Gomez, Rojas, Ramos, Bravo, Alves, Saenz, Moris, Leon, Diaz, Vergara Campos, and Villamil Martinez