Last name Janzer (Janzer 
) , around the globe, is quite a rare surname. The surname Janzer is characteristic of Hungary, where it is a rare surname, Germany, and Austria. Measured by absolute frequency, it is commonest in Germany, the United States, and Hungary. Very seldom, Janzer is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Janzer | Hungary, Germany, Poland, Canada, United States |
| gertrud janzer DE (b. 1903) |
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| janzer györgy violist, HU (b. 1914) |
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manuel janzer German association football player, DE (b. 1992) |
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| jörg janzer DE (b. 1939) |
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| janzer frigyes HU (b. 1939) |
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| wolfram janzer DE (b. 1945) |
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| holger janzer Ph.D. Universität Ulm 2012 |
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| a. janzer photographer |
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| dennis janzer |
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