Cognomen Oyuntsetseg (Oyuntsetseg 
) , across the world, is a rare last name. The cognomen Oyuntsetseg is characteristic of Mongolia, where it is quite a common surname, Malaysia, where it is an extremely rare surname, and the United States. In absolute terms, it is the most numerous in Mongolia, China, and the United States. Also, Oyuntsetseg is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Oyuntsetseg | Mongolia, United States, Malaysia, China |