Surname Onufriichuk (Onufriichuk 
, Онуфриичук 
, Онуфрийчук 
) , all over the world, is a rare family name. The family name Onufriichuk is characteristic of Belarus, where it is a rare surname, Russia, and Kazakhstan. Measured by absolute frequency, it most frequently occurs in Eastern Europe, particularly Russia, Belarus, and Poland.
| VARIANT | COUNTRY |
|---|---|
| Onufriichuk | Spain, Poland, Belarus |
| Онуфриичук | Russia |
| Онуфрийчук | Russia, Ukraine, Kazakhstan, Belarus |
| adriana onufriichuk |
|