Family name ซม (Som 
, ซม 
) , in all the world, is a common cognomen. The family name ซม is habitual in British Virgin Islands, where it is quite a common surname, Malaysia, and Hungary. Not in comparison with a country's population, it most frequently occurs in India, Malaysia, and Cameroon. Likewise, ซม is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Som | Malaysia, Saudi Arabia, Nepal, Cameroon, India |
| ซม | Thailand |