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 | Kazakhstan, Belarus, United States, Russia, Ukraine |
| Омелянчук | Kazakhstan, Belarus, Kyrgyzstan, Russia, Ukraine |
| Omelianchuk | Portugal, Lithuania, United States, Russia, Ukraine |
| Омелианчук | Russia |
Омелйанчук, Омеляньчук, and Омэлянчук
| adam omelianchuk researcher |
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