Cognomen Деміраяк (Деміраяк 
) , in all the world, is an extremely rare last name. The cognomen Деміраяк is habitual in Eastern Europe, particularly Ukraine, where it is an extremely rare surname. Likewise, Деміраяк is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Деміраяк | Ukraine |