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 |
|---|---|
| Son, San | Vietnam, Malaysia, India, Myanmar, Mongolia |
| Seine | Indonesia, Spain, Malaysia, United States, Myanmar |
| سن | Saudi Arabia, Sudan, Syria, Egypt, Iraq |