Cognomen Уметжан (Уметжан 
) , globally, is an extremely rare family name. The surname Уметжан is habitual in Central Asia, particularly Kyrgyzstan, where it is a very rare surname. Predominantly, Уметжан is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Уметжан | Kyrgyzstan, Uzbekistan, Kazakhstan, Russia |