Surname Усупбек (Усупбек 
) , in all the world, is a rare last name. The cognomen Усупбек is habitual in Kyrgyzstan, where it is quite a rare surname, and Russia, where it is an extremely rare surname. Also, Усупбек is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Усупбек | Kyrgyzstan, Russia |