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Cognomen Grzejszczak (Grzejszczak
) , globally, is a rare last name. The last name Grzejszczak is habitual in Poland, where it is quite a rare surname, Australia, where it is a very rare surname, and Canada. Not in comparison with a country's population, it is commonest in Poland, the United States, and France. More frequently, Grzejszczak is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Grzejszczak | Canada, Poland, France, Australia, United States |