Last name Schmalenberg (Schmalenberg 
) , in the entire world, is a rare cognomen. The last name Schmalenberg is characteristic of Germany, where it is a rare surname, Canada, and Poland. Not in comparison with a country's population, it is the most numerous in Germany, the United States, and Canada. Much less frequently, Schmalenberg is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Schmalenberg | Germany, United States, Poland, Canada, New Zealand |
| erich schmalenberg (b. 1931) |
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| katharina schmalenberg German actor and stage actor, DE (b. 1973) |
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| heidrun schmalenberg AT (b. 1969) |
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| sophia schmalenberg German association football player, DE |
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| hilmar schmalenberg |
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| claudia schmalenberg |
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