Cognomen Adamčuk (Адамчук 
, Adamčuk 
) , across the world, is quite a common last name. The surname Adamčuk is characteristic of Eastern Europe, particularly Ukraine, where it is quite a rare surname, Belarus, and Russia, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Адамчук | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |
| Adamčuk | Croatia |
Adamchuk, Adamcuk, and Adamtschuk