Last name Korchak (Корчак 
, Korchak 
, Корчик 
) , throughout the world, is quite a common family name. The family name Korchak is characteristic of Eastern Europe, particularly Ukraine, where it is quite a rare surname, Belarus, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Корчак | Kazakhstan, Belarus, Kyrgyzstan, Russia, Ukraine |
| Korchak | Brazil, France, Canada, United States, Russia |
| Корчик | Kazakhstan, Belarus, Romania, Russia, Ukraine |
| anna korchak Ukrainian Righteous Among the Nations, UA (b. 1925) |
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| bud korchak Canadian football player (1927-2010), CA (b. 1927) |
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| tatyana korchak Ukrainian association football player, UA |
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