Last name Grzegorczyk (Grzegorczyk 
, Гжегорчик 
) , globally, is quite a common family name. The last name Grzegorczyk is characteristic of Poland, where it is quite a common surname, Ireland, where it is a rare surname, and France. Measured by absolute frequency, it is the most numerous in Poland, the United States, and France. More frequently, Grzegorczyk is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Grzegorczyk | Poland, France, Brazil, United States, Germany |
| Гжегорчик | Ukraine |
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andrzej grzegorczyk Polish mathematician and philosopher, PL (b. 1922) |
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| piotr grzegorczyk 1894-1968; ISNI: 0000 0000 8113 6444; LC: n85249467; http://viaf.org/viaf/34587136/ (b. 1894) |
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christophe grzegorczyk French-Polish academic and lawyer (1946-2018), FR (b. 1946) |
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| marian grzegorczyk (b. 1887) |
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| jan grzegorczyk Polish trade unionist, PL (b. 1899) |
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| rozalia grzegorczyk (b. 1896) |
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jan grzegorczyk Polish writer, PL (b. 1959) |
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| władysław grzegorczyk PL (b. 1905) |
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paweł grzegorczyk PL (b. 1967) |
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| helena grzegorczyk PL (b. 1918) |
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| józef grzegorczyk PL (b. 1922) |
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filip grzegorczyk PL (b. 1978) |
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| julian grzegorczyk PL (b. 1928) |
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| dan grzegorczyk (b. 1929) |
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| ryszard grzegorczyk Polish footballer, PL (b. 1939) |
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