Cognomen Ushomirskiy (Ushomirskiy 
, Ушомирский 
) , in the world, is a very rare last name. The last name Ushomirskiy is habitual in Russia, where it is a very rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Ushomirskiy | United States |
| Ушомирский | Russia |