Family name Kopytjuk (Kopytjuk 
, Копытюк 
) , around the world, is a very rare surname. The surname Kopytjuk is characteristic of Kazakhstan, where it is a rare surname, Germany, where it is an extremely rare surname, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Kopytjuk | Germany, United States |
| Копытюк | Kazakhstan, Russia |