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Family name Petrushchak (Петрущак
, Petrushchak
) , in all the world, is a rare cognomen. The cognomen Petrushchak is habitual in Ukraine, where it is quite a rare surname, Romania, where it is a rare surname, and Kazakhstan.
| VARIANT | COUNTRY |
|---|---|
| Петрущак | Ukraine, Russia, Kazakhstan |
| Petrushchak | Kazakhstan, Spain, Romania, France, Canada |