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Cognomen Nykolaychuk (Nykolaychuk
, Николаичук
, Николаычук
) , around the globe, is a rare last name. The surname Nykolaychuk is characteristic of Czechia, where it is a rare surname, Russia, and New Zealand. In absolute terms, it is the most numerous in Russia, Spain, and Canada.
| VARIANT | COUNTRY |
|---|---|
| Nykolaychuk | Canada, Spain, Czechia, Greece, United States |
| Николаичук, Николаычук | Russia |