Cognomen Janiczek (Janiczek 
) , in the entire world, is quite a rare last name. The last name Janiczek is habitual in Eastern Europe, particularly Poland, where it is quite a rare surname, Czechia, and Slovakia, where it is a rare surname. Measured by absolute frequency, the name is most common in Poland, the United States, and Czechia. More frequently, Janiczek is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Janiczek | Slovakia, Czechia, United States, Germany, Poland |
| wladimir janiczek (b. 1860) |
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| johann baptist janiczek CZ (b. 1883) |
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roman janiczek Electrical engineer, PL (b. 1949) |
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| jan edward janiczek PL (b. 1898) |
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| franz janiczek (b. 1909) |
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| roman karol janiczek PL (b. 1910) |
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arkadiusz janiczek Polish actor, PL (b. 1974) |
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| stanisław janiczek PL (b. 1921) |
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| roman stanisław janiczek PL (b. 1939) |
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| marlena janiczek researcher |
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| vlastimil janiczek CZ (b. 1972) |
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| ingeborg janiczek |
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