Cognomen Sompasong (Sompasong 
) , around the globe, is a rare surname. The last name Sompasong is characteristic of Laos, where it is quite a common surname, Thailand, where it is a rare surname, and Australia, where it is a very rare surname. More frequently, Sompasong is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sompasong | Australia, Thailand, Canada, Laos, United States |