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Family name Ostafiychuk (Остафийчук
, Ostafiychuk
) , in the entire world, is a rare last name. The last name Ostafiychuk is characteristic of Kazakhstan, where it is a rare surname, Belarus, and Russia. Not in comparison with a country's population, the name is most common in Russia, Kazakhstan, and Spain.
| VARIANT | COUNTRY |
|---|---|
| Остафийчук | Ukraine, Kazakhstan, Romania, Russia, Belarus |
| Ostafiychuk | Ukraine, United States, Spain, Bulgaria, Italy |