Family name Omelianchuk (Омельянчук 
, Омелянчук 
, Omelianchuk 
) , throughout the world, is quite a rare surname. The surname Omelianchuk is habitual in Eastern Europe, particularly Ukraine, where it is quite a rare surname, Belarus, and Russia, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Омельянчук | Russia, Belarus, Kazakhstan, Ukraine, United States |
| Омелянчук | Kyrgyzstan, Russia, Belarus, Kazakhstan, Ukraine |
| Omelianchuk | Russia, Portugal, Ukraine, Lithuania, United States |
| Омелианчук | Russia |
Омелйанчук, Омеляньчук, and Омэлянчук
| adam omelianchuk researcher |
|