Cognomen Hadders (Hadders 
) , in all the world, is a rare last name. The cognomen Hadders is habitual in Netherlands, where it is quite a rare surname, Sweden, where it is a rare surname, and Norway, where it is a very rare surname. Not in comparison with a country's population, the name is most common in Netherlands, the United States, and Sweden.
| VARIANT | COUNTRY |
|---|---|
| Hadders | Sweden, South Africa, United States, Canada, Netherlands |
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roelof zegering hadders Dutch politician, NL (b. 1912) |
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rob hadders Dutch speed skater, NL (b. 1983) |
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| jan zegering hadders Dutch economist, NL (b. 1946) |
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| gerard hadders Dutch graphic designer, NL (b. 1954) |
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| hans hadders SE (b. 1960) |
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| hans hadders researcher (ORCID 0000-0001-6513-6425) |
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| janneke hadders Dutch business executive |
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| michael hadders researcher (ORCID 0000-0002-2653-2625) |
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| hans hadders researcher (ORCID 0000-0003-4515-2780) |
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| rianne hadders Dutch speed skater, NL (b. 1992) |
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