Last name Chojnacki (Chojnacki 
, Хойнацкий 
) , in the world, is a common family name. The last name Chojnacki is characteristic of Poland, where it is quite a common surname, France, where it is quite a rare surname, and Ireland, where it is a rare surname. Not in comparison with a country's population, it is commonest in Poland, the United States, and France. Likewise, Chojnacki is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Chojnacki | Poland, France, United States, United Kingdom, Germany |
| Хойнацкий | Russia |
| dominik chojnacki PL (b. 1721) |
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romuald chojnacki Polish painter (1818-1885), PL (b. 1818) |
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| wojciech izydor chojnacki PL (b. 1785) |
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| henryk chojnacki PL (b. 1817) |
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| euzebiusz teofil chojnacki PL (b. 1833) |
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bronisław chojnacki Polish politician, PL (b. 1895) |
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jerzy chojnacki Polish artist and photographer (1909-1988), PL (b. 1909) |
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jakub chojnacki polish engineer, PL (b. 1922) |
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| roman chojnacki Polish conductor, PL (b. 1879) |
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| piotr julian chojnacki Polish teacher, PL (b. 1897) |
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| jan chojnacki (b. 1890) |
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| fidelis chojnacki Polish Roman Catholic Capuchin friar, priest, and martyr, PL (b. 1906) |
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| józef chojnacki Polish chemist, PL (b. 1913) |
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jarosław chojnacki Polish musician, PL (b. 1964) |
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robert chojnacki PL (b. 1958) |
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