Surname Siegen (西根 
, Siegen 
) , globally, is a rare family name. The surname Siegen is habitual in Switzerland, where it is a rare surname, Israel, where it is a very rare surname, and Germany. Measured by absolute frequency, this name is the most popular in China, Germany, and Switzerland. More frequently, Siegen is the forename as well as the last name.
| VARIANT | COUNTRY |
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| 西根 | China |
| Siegen | United States, Israel, Switzerland, Germany |
| nikolaus von siegen German author, DE (b. 1450) |
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| arnold von siegen politician (1500-1579), DE (b. 1500) |
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| ludwig von siegen German engraver, DE (b. 1609) |
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pierre mathias siegen (1828-1903), LU (b. 1828) |
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| august von siegen German painter, DE (b. 1850) |
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| charles siegen (b. 1842) |
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| karl franz siegen DE (b. 1851) |
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| johann siegen (b. 1886) |
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| gottfried siegen (b. 1900) |
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| siegen mckellar researcher |
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| ludwig von siegen DE |
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