Surname Kopchuk (Kopchuk 
) , all over the world, is a very rare family name. The last name Kopchuk is characteristic of Czechia, where it is a rare surname, Canada, where it is a very rare surname, and Russia, where it is an extremely rare surname. Not in comparison with a country's population, it most frequently occurs in Czechia, Canada, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Kopchuk | Russia, Czechia, United States, Canada, Ukraine |