Surname Peregniak (Peregniak 
, Перегняк 
) , in the entire world, is a rare cognomen. The last name Peregniak is characteristic of Eastern Europe, particularly Ukraine, where it is a rare surname, Belarus, and Russia, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Peregniak | Canada |
| Перегняк | Ukraine, Belarus, Russia |