Cognomen Mendel (Mendel 
, מנדל , Мендель 
, among others...) , in the world, is a common surname. The cognomen Mendel is characteristic of Israel, where it is quite a common surname, Slovakia, where it is quite a rare surname, and Austria. In absolute terms, it is the most numerous in Israel, Germany, and the United States. Also, Mendel is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Mendel | Germany, Brazil, Poland, United States, Israel |
| מנדל, מענדל | Israel |
| Мендель | Ukraine, Kazakhstan, Belarus, Russia, Kyrgyzstan |
| メンデル | Japan |
| مندل | Iraq, Yemen, Sudan |
| Мендел | Kazakhstan, Russia, Ukraine, Armenia |
| mendel heymann (1683-1766), DE (b. 1683) |
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| mendel leidesdorf (b. 1710) |
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mendel levin nathanson Danish merchant, author and contributing editor, DE (b. 1780) |
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mendel elias delbanco SE (b. 1780) |
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| mendel oppenheim (b. 1756) |
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gregor mendel Silesian scientist and Augustinian friar (1822-1884), CZ (b. 1822) |
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| mendel rosenbaum German rabbi, DE (b. 1782) |
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henriette mendel German actress, spouse of duke Ludwig Wilhelm in Bavaria (1833-1891), DE (b. 1833) |
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| mendel ben chajim jehuda breslau silesian Hebraist (1760–1829) (b. 1786) |
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| moritz heinrich mendel (b. 1777) |
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emanuel mendel German neurologist and psychiatrist, DE (b. 1839) |
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| isaak mendel (b. 1780) |
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| mendel schie DE (b. 1784) |
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| mendel beer FR (b. 1788) |
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| mendel hess German rabbi, DE (b. 1807) |
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