Surname Wilczek (Wilczek 
, Вильчек 
, וילצ'ק 
) , worldwide, is quite a common last name. The cognomen Wilczek is characteristic of Poland, where it is quite a common surname, Malta, where it is quite a rare surname, and Germany. In absolute terms, it is commonest in Poland, Germany, and the United States. Also, Wilczek is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Wilczek | Germany, Czechia, Austria, United States, Poland |
| Вильчек | Kazakhstan, Russia, Ukraine, Belarus |
| וילצ'ק | Israel |
| Вільчек | Ukraine |
| bernard wilczek Roman Catholic archbishop (b. 1450) |
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jindřich vilém wilczek (1665-1739), CZ (b. 1665) |
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johann josef von wilczek Austrian diplomat (1738-1819), AT (b. 1738) |
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| josef maria wilczek 22 Jul 1700 Königsberg - 1 Mar 1777 Wien, RU (b. 1700) |
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| johann wilczek (1710-1787) (b. 1710) |
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| ignacy wilczek SK (b. 1728) |
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friedrich von wilczek Austrian Empire politician (1790-1861), CZ (b. 1790) |
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| franz josef wilczek nobleman (1748-1834), AT (b. 1748) |
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| anna maria wilczek (1781-1850), AT (b. 1781) |
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johann nepomuk wilczek Austrian explorer (1837-1922), AT (b. 1837) |
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| stanislaus wilczek 24 Nov 1792 Wien - 23 Mar 1847 Wien, AT (b. 1792) |
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| sophie friederike von wilczek singer and actress, IT (b. 1823) |
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wilczek ernő HU (b. 1883) |
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| emma emo-capolista wilczek (b. 1833) |
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| marie wilczek Czech noblewoman (1858-1938), FR (b. 1858) |
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