Cognomen Fledderus (Fledderus 
) , around the world, is a rare last name. The last name Fledderus is habitual in Netherlands, where it is quite a rare surname, Canada, where it is a very rare surname, and Australia. In absolute terms, it most frequently occurs in Netherlands, Canada, and Germany.
| VARIANT | COUNTRY |
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| Fledderus | Germany, Australia, United States, Canada, Netherlands |
| harmen coops fledderus NL (b. 1714) |
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| hilligje fledderus Dutch Righteous Among the Nations, NL (b. 1907) |
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| pieter fledderus Dutch Righteous Among the Nations, NL (b. 1909) |
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mark-jan fledderus Dutch footballer, NL (b. 1982) |
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| riëtte fledderus Dutch volleyball player, NL (b. 1977) |
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| joost o fledderus researcher |
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| erik richard fledderus Ph.D. Universiteit Twente 1997 |
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| alerdus fledderus Alerdus Fledderus, Mayor of Giethoorn (1803-1811) |
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| martine fledderus researcher |
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| marrit fledderus Dutch speed skater, NL |
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