Cognomen Külbs (Külbs 
) , in the entire world, is a rare family name. The last name Külbs is habitual in Western Europe, particularly Germany, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Külbs | Germany |
| franz külbs DE (b. 1870) |
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| christian külbs German politician (1914-1981), DE (b. 1914) |
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| jasmin külbs German judoka, DE (b. 1991) |
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