Cognomen Koczuk (Koczuk 
) , in all the world, is a rare surname. The family name Koczuk is habitual in Poland, where it is a rare surname, Argentina, where it is a very rare surname, and the United States, where it is an extremely rare surname. Also, Koczuk is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Koczuk | Brazil, United States, Poland, Argentina |