Cognomen Давыдчук (Давыдчук 
) , in the world, is a very rare last name. The last name Давыдчук is characteristic of Belarus, where it is a very rare surname, Russia, and Kazakhstan.
| VARIANT | COUNTRY |
|---|---|
| Давыдчук | Kazakhstan, Russia, Ukraine, Belarus |
| давыдчук, ярослав UA |
|