Cognomen Korczak (Korczak 
, Корчак 
, קורצ'אק 
) , in the entire world, is quite a common last name. The cognomen Korczak is characteristic of Eastern Europe, particularly Poland, where it is quite a common surname, Ukraine, where it is quite a rare surname, and Russia. Also, Korczak is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Korczak | Germany, United States, Poland, Canada, France |
| Корчак | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |
| קורצ'אק | Israel |
|
janusz korczak Polish educator (1878-1942), PL (b. 1878) |
|
|
stanisław korczak Polish policeman murdered in Katyn, PL (b. 1896) |
|
|
józef korczak PL (b. 1891) |
|
|
marian korczak LT (b. 1897) |
|
|
korczak ziolkowski Polish American designer and sculptor, US (b. 1908) |
|
|
rozka korczak Polish Jewish partisan leader during World War II, PL (b. 1921) |
|
| adolf korczak (b. 1892) |
|
|
| franciszek korczak Polish Righteous Among the Nations, PL (b. 1902) |
|
|
| andrzej korczak PL (b. 1896) |
|
|
|
piotr korczak PL (b. 1961) |
|
| jerzy korczak Polish writer, PL (b. 1927) |
|
|
| marian korczak Polish politician and deputy, PL (b. 1930) |
|
|
| mieczysław korczak (b. 1921) |
|
|
| mieczysław korczak PL (b. 1924) |
|
|
|
marcin grzegorz korczak PL (b. 1978) |
|