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Surname Grzelak (Grzelak
, Гжеляк
) , worldwide, is a common family name. The family name Grzelak is habitual in Poland, where it is quite a common surname, Slovakia, where it is quite a rare surname, and Ireland, where it is a rare surname. Measured by absolute frequency, the name is most common in Poland, the United States, and France. More frequently, Grzelak is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Grzelak | Poland, France, United States, United Kingdom, Germany |
| Гжеляк | Russia, Ukraine |