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