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