Surname Сомпхон (Somphone 
, Сомпхон 
) , in the entire world, is quite a rare last name. The cognomen Сомпхон is habitual in Laos, where it is quite a common surname, Thailand, where it is a very rare surname, and France. Measured by absolute frequency, it is the most numerous in Laos, Thailand, and the United States. More frequently, Сомпхон is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Somphone | France, United States, Thailand, Laos, Canada |
| Сомпхон | Ukraine |