Family name Yashlavskiy (Yashlavskiy 
, Яшлавский 
) , around the globe, is a very rare cognomen. The last name Yashlavskiy is characteristic of Russia, where it is a very rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Yashlavskiy | United States |
| Яшлавский | Russia |