Cognomen Bertz (Bertz 
) , all over the world, is quite a rare surname. The surname Bertz is habitual in Germany, where it is quite a rare surname, Sweden, where it is a rare surname, and Ireland. Measured by absolute frequency, it is commonest in Germany, the United States, and Sweden. Much less frequently, Bertz is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Bertz | Brazil, Sweden, Germany, United Kingdom, United States |
| ulrich bertz CH (b. 1531) |
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| jeanne françoise marguerite esther bertz CH (b. 1745) |
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| eduard bertz German translator, DE (b. 1853) |
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| paul bertz German politician and locksmith (1886-1950), DE (b. 1886) |
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hendrik bertz canoeist, DE (b. 1988) |
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| detlef bertz German luger, DE (b. 1962) |
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| inka bertz (b. 1959) |
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| dieter bertz DE (b. 1962) |
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| martin bertz researcher |
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| simone bertz researcher (ORCID 0000-0003-0458-7075) |
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| frank bertz college basketball player (2019–2020) Central Florida |
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| hartmut bertz researcher |
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| josefine bertz researcher |
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| marian bertz German historian, DE (b. 1987) |
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| andreas bertz |
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