Cognomen Sisourath (Sisourath 
) , around the globe, is a rare surname. The surname Sisourath is habitual in Laos, where it is quite a rare surname, Australia, where it is a very rare surname, and Canada. In absolute terms, it most frequently occurs in Laos, the United States, and Australia. Much less frequently, Sisourath is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sisourath | Australia, Canada, France, Laos, United States |