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