Family name Sengsouvan (Sengsouvan 
) , worldwide, is a rare last name. The family name Sengsouvan is habitual in Laos, where it is quite a rare surname, Thailand, where it is an extremely rare surname, and the United States. Much less frequently, Sengsouvan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sengsouvan | United States, Laos, Thailand |