Family name Kruppa (Kruppa 
) , throughout the world, is quite a rare cognomen. The family name Kruppa is habitual in Hungary, where it is quite a rare surname, Germany, and Luxembourg. Not in comparison with a country's population, the name is most common in Germany, Hungary, and the United States. Much less frequently, Kruppa is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Kruppa | Hungary, Slovakia, United States, Germany, Poland |
| erwin kruppa Austrian mathematician (1885-1967), AT (b. 1885) |
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| františek kruppa (b. 1905) |
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| reinhold kruppa DE (b. 1933) |
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| hans kruppa German writer, DE (b. 1952) |
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| tamás kruppa HU (b. 1964) |
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| jens kruppa swimmer, DE (b. 1976) |
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| christiane kruppa researcher (ORCID 0000-0001-6817-9949) |
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| hannes kruppa Ph.D. ETH Zürich 2004 |
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| jochen kruppa Dr. Universität zu Lübeck 2013 |
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| philipp kruppa researcher (ORCID 0000-0003-1654-7257) |
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| michael kruppa Dr.-Ing. Universität des Saarlandes 2006 |
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| hannes kruppa Visiting Scientist Department of Computer Science; Carnegie-Mellon University |
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| michael d kruppa researcher |
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| sebastian kruppa researcher |
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| juliane kruppa researcher |
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