Cognomen Lorenzen (Lorenzen 
, Лоренцен 
) , around the globe, is a common last name. The family name Lorenzen is characteristic of Denmark, where it is quite a common surname, Germany, and Malta, where it is quite a rare surname. Not in comparison with a country's population, it is the most numerous in Germany, the United States, and Denmark.
| VARIANT | COUNTRY |
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| Lorenzen | Germany, Denmark, Canada, Brazil, United States |
| Лоренцен | Ukraine |
Laurantzon, Laurentsson, Lorensen, Lorenson, Lorensson, Lorentsen, Lorentson, Lorentzen, Lorentzon, Lorentzson, and Лорензен
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hjort lorenzen Danish politician and merchant (1791-1845), DK (b. 1791) |
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nis lorenzen (b. 1794) |
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| thomas lorenzen (b. 1750) |
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johan frederik lorenzen (1831-1907), DK (b. 1831) |
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| carl henrik lorenzen 1807-1859 (b. 1807) |
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vilhelm lorenzen Danish architectural historian (1877-1961), DK (b. 1877) |
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| christian claus lorenzen born 1829; died 1887 (b. 1829) |
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| helene lorenzen (b. 1820) |
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| friedrich nicolaus lorenzen (b. 1822) |
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julius lorenzen German politician (1897-1965), DE (b. 1897) |
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| marcus lorenzen botanist (1847-1928) (b. 1847) |
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henry lorenzen Danish actor (1899-1961), DE (b. 1899) |
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| johannes theodor lorenzen Danish mineralogist (b. 1855) |
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| fernando lorenzen German architect, DE (b. 1859) |
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howard o. lorenzen Electronic Warfare researcher, US (b. 1912) |
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