Surname Мендбаяр (Мендбаяр 
) , in all the world, is an extremely rare cognomen. The surname Мендбаяр is characteristic of Eastern Europe, particularly Russia, where it is an extremely rare surname. Much less frequently, Мендбаяр is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Мендбаяр | Russia, Ukraine |