Globally, Dorniak (Dorniak 
, Дорняк 
) is a very rare male forename. The given name Dorniak is habitual in Eastern Europe, particularly Poland, where it is a very rare male name. Likewise, Dorniak is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Dorniak | Poland, Lithuania, France, United States, Germany |
| Дорняк | Russia, Ukraine, Belarus |