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 | Germany, France, United States, United Kingdom, Poland |
| Гжеляк | Ukraine, Russia |
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tadeusz grzelak Polish sportsperson, PL (b. 1929) |
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| jan grzelak PL (b. 1880) |
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grzegorz grzelak Polish political scientist, PL (b. 1953) |
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| stanisław grzelak Polish cyclist, PL (b. 1920) |
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| antoni grzelak PL (b. 1912) |
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| bronisława grzelak PL (b. 1914) |
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agnieszka grzelak Polish jurist, PL |
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rafał grzelak Polish footballer, PL (b. 1982) |
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| edward grzelak (b. 1926) |
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| józef grzelak PL (b. 1929) |
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| janusz grzelak Polish psychologist, PL (b. 1941) |
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piotr grzelak PL (b. 1982) |
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| henryk grzelak PL (b. 1934) |
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klaudia grzelak Polish sportsperson, PL (b. 1996) |
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| andrzej grzelak PL (b. 1939) |
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