Family name Kurivchak (Kurivchak 
, Куривчак 
) , in the world, is a very rare cognomen. The cognomen Kurivchak is characteristic of Ukraine, where it is a rare surname, Russia, where it is a very rare surname, and Kazakhstan.
| VARIANT | COUNTRY |
|---|---|
| Kurivchak | Russia, United States, Ukraine |
| Куривчак | Russia, Kazakhstan, Ukraine |