Surname סרג'יו (Sergio 
, Sergiu 
, סרג'יו 
) , across the world, is a widespread family name. The surname סרג'יו is habitual in Mexico, where it is a common surname, Nicaragua, and Spain (explore the name in all countries). Measured by absolute frequency, it is the most numerous in Mexico, Spain, and Argentina. More prevalently, סרג'יו is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sergio | Italy, Spain, Mexico, Brazil, Argentina |
| Sergiu | Italy, Spain, Brazil, United States, Argentina |
| סרג'יו | Israel |