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Cognomen Kordiyak (Kordiyak
, Кордияк
) , around the world, is a rare last name. The cognomen Kordiyak is habitual in Belarus, where it is a rare surname, Kazakhstan, where it is a very rare surname, and Russia. Not in comparison with a country's population, it is the most numerous in Russia, Belarus, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Kordiyak | United States, Russia |
| Кордияк | Belarus, Kazakhstan, Russia, Ukraine |