Cognomen Сейт-Умер (Сейт-Умер 
) , across the world, is an extremely rare last name. The last name Сейт-Умер is habitual in Eastern Europe, particularly Ukraine, where it is an extremely rare surname, and Russia. More prevalently, Сейт-Умер is the forename as well as the last name. Parts of the name also exists independently as a first name Сейт, and a first name Умер.
| VARIANT | COUNTRY |
|---|---|
| Сейт-Умер | Russia, Ukraine |