Last name Külzer (Külzer 
) , worldwide, is a rare cognomen. The family name Külzer is habitual in Germany, where it is a rare surname, and Brazil, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Külzer | Germany, Brazil |
| andreas külzer German philologist, DE (b. 1962) |
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| andreas külzer German actor, DE (b. 1966) |
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