Cognomen Museichuk (Museichuk 
, Мусейчук 
) , throughout the world, is a rare surname. The surname Museichuk is habitual in Eastern Europe, particularly Belarus, where it is a rare surname, Ukraine, and Russia, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Museichuk | Russia |
| Мусейчук | Ukraine, Belarus, Russia |