Surname Janaszek (Janaszek 
) , in the world, is a rare family name. The surname Janaszek is habitual in Poland, where it is quite a rare surname, Ireland, where it is a rare surname, and France, where it is a very rare surname. Measured by absolute frequency, it most frequently occurs in Poland, France, and the United States. Likewise, Janaszek is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Janaszek | Germany, United Kingdom, United States, Poland, France |
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wacław janaszek Polish officer, PL (b. 1903) |
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piotr janaszek PL (b. 1947) |
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| zbigniew janaszek Polish sportsperson and officer (1913-1983), PL (b. 1913) |
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| monika janaszek researcher |
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| bartosz janaszek researcher |
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