Cognomen Shliak (Шляк 
, Shliak 
) , around the globe, is a rare surname. The surname Shliak is characteristic of Kazakhstan, where it is a rare surname, Ukraine, and Russia, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Шляк | Kazakhstan, Russia, Ukraine, Belarus |
| Shliak | United States |