Surname Souvankham (Souvankham 
) , in all the world, is quite a rare cognomen. The cognomen Souvankham is characteristic of Laos, where it is quite a common surname, and the United States, where it is an extremely rare surname. Also, Souvankham is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Souvankham | United States, Thailand, Canada, Laos |