Cognomen Slobodnyak (Slobodnyak 
, Слободняк 
) , in the entire world, is a rare family name. The family name Slobodnyak is characteristic of Eastern Europe, particularly Ukraine, where it is a rare surname, Belarus, where it is a very rare surname, and Russia. Not in comparison with a country's population, it is commonest in Ukraine, Russia, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Slobodnyak | United States, Ukraine, Russia |
| Слободняк | Ukraine, Russia, Belarus |