Family name Серж (Serge 
, Srdjan 
, Serges , among others...) , all over the world, is a common cognomen. The cognomen Серж is characteristic of Sub-Saharan Africa, particularly Cameroon, where it is quite a common surname, Gabon, and Ivory Coast (explore the name in all countries). Measured by absolute frequency, this name is the most popular in Sub-Saharan Africa, particularly Cameroon, Ivory Coast, and Ethiopia. More prevalently, Серж is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Serge | Serbia, Cameroon, Ivory Coast, Democratic Republic of the Congo, France |
| Srdjan | Bosnia and Herzegovina, Belgium, Serbia, Canada, France |
| Serges | Canada, Cameroon, Ivory Coast, Democratic Republic of the Congo, France |
| Serj | Canada, United States, Lebanon, Ivory Coast, France |
| Серж | Belarus, United States, Russia, Armenia, Moldova |
| Serzh | Ukraine, Belarus, United States, Russia, Armenia |
| Sersch | Germany, United States |
Sergei, Sergej, Sergejs, Sergejus, Sergey, Serghei, Sergi, Sergio, Sergios, Sergiu, Sergius, Sergiusz, Serguei, Sergueï, Serguéi, Serhij, Serxio, Serž, Siarhei, Siarhej, Siarhiej, Siergiej, Syarhey, Szergej, Sérgio, Σέργιος, Сергей, Сергий, Сергиос, Сергиус, Сергиуш, Сергій, Серджо, Серджу, Сержи, Сержио, Сержиу, Серхи, Серхио, Серый, Серёга, Сяргей, סרג'י, סרגיוס, סרגיי, سرجيوس, سيرج, سيرجي, سيرجيو, سيرغي, セルゲイ, セルジョ, and セルヒオ