Family name سن (San 
, Son , Seine 
) , in the entire world, is a widespread cognomen. The cognomen سن is characteristic of Mongolia, where it is a prevalent surname, Myanmar, and Malaysia, where it is a common surname (explore the name in all countries). Also, سن is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| San, Son | Mongolia, Malaysia, Myanmar, India, Vietnam |
| Seine | Malaysia, Spain, Myanmar, United States, Indonesia |
| سن | Sudan, Saudi Arabia, Syria, Iraq, Egypt |