Cognomen Sumiyadorj (Sumiyadorj 
) , in the world, is a very rare last name. The surname Sumiyadorj is characteristic of Mongolia, where it is quite a rare surname, and the United States, where it is an extremely rare surname. Also, Sumiyadorj is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sumiyadorj | Mongolia, United States |