Family name Siepmann (Siepmann 
) , in the world, is quite a rare surname. The family name Siepmann is habitual in Western Europe, particularly Germany, where it is quite a rare surname, Luxembourg, and Switzerland, where it is a rare surname. Measured by absolute frequency, it is the most numerous in Germany, Brazil, and the United States. Much less frequently, Siepmann is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Siepmann | Germany, Singapore, Switzerland, United States, Brazil |
| alexander heinrich von siepmann (b. 1700) |
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| abraham gottlieb siepmann DE (b. 1780) |
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emil siepmann DE (b. 1863) |
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charles siepmann media scholar and policy advocate, GB (b. 1899) |
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| heinrich siepmann German architect, DE (b. 1850) |
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| otto siepmann Siepmann, Otto (1861–1947), teacher of modern languages (b. 1861) |
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| hugo siepmann German industrialist and patron, DE (b. 1868) |
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| harry siepmann (b. 1889) |
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| eric otto siepmann (1903-1970) (b. 1903) |
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| heinrich siepmann German painter (1904-2002), DE (b. 1904) |
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thomas siepmann German university teacher, DE (b. 1958) |
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jörg siepmann German film director and film producer, DE (b. 1966) |
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| ingrid siepmann (b. 1931) |
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| jeremy siepmann musician and writer, US (b. 1942) |
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| karl egon siepmann DE (b. 1933) |
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