Cognomen Knoppert (Knoppert 
) , in the entire world, is a rare surname. The last name Knoppert is habitual in Netherlands, where it is quite a rare surname, Australia, where it is a very rare surname, and Spain.
| VARIANT | COUNTRY |
|---|---|
| Knoppert | Netherlands, Spain, Australia, Canada, United States |
| p.l. knoppert (b. 1924) |
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| erik knoppert chess player (b. 1959) |
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| theodora knoppert |
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| elisabeth knoppert |
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| anna knoppert |
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