Surname Sithi-Oum (Sithi-Oum 
) , in all the world, is an extremely rare family name. The family name Sithi-Oum is characteristic of Northern America, particularly the United States, where it is an extremely rare surname. Parts of the name also exists independently as a first name Sithi, and a first name Oum.
| VARIANT | COUNTRY |
|---|---|
| Sithi-Oum | United States |