Cognomen Міхалчук (Міхалчук 
) , across the world, is an extremely rare family name. The family name Міхалчук is characteristic of Eastern Europe, particularly Ukraine, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Міхалчук | Ukraine |
Michalchuk, Mihalchuk, and Mikhalchuk