Family name Серхио (Sergio 
, Sergiu 
, Serkhio 
, along with others...) , in all the world, is a widespread cognomen. The last name Серхио is characteristic of 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 frequently, Серхио is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sergio | Italy, Mexico, Spain, Brazil, Argentina |
| Sergiu | Italy, Brazil, Spain, United States, Argentina |
| Serkhio | Afghanistan, Russia |
| Serxio | United States, Spain |
| Serhio | United Kingdom, Brazil, Spain, United States, Philippines |
| Серхио | Russia |
Serchio, Serge, Sergei, Sergej, Sergejs, Sergejus, Sergey, Serghei, Sergi, Sergios, Sergius, Sergiusz, Serguei, Sergueï, Serguéi, Serhij, Siarhei, Siarhej, Siarhiej, Siergiej, Syarhey, Szergej, Sérgio, Σέργιος, Сергей, Сергий, Сергиос, Сергиус, Сергиуш, Сергій, Серджо, Серджу, Серж, Сержи, Сержио, Сержиу, Серхи, Серый, Серёга, Сяргей, סרג'י, סרגיוס, סרגיי, סרחיו, سرجيوس, سيرج, سيرجي, سيرجيو, سيرخيو, سيرغي, セルゲイ, セルジョ, and セルヒオ