Last name Duffner (Duffner 
) , in the entire world, is quite a rare surname. The surname Duffner is habitual in Western Europe, particularly Germany, where it is quite a rare surname, Switzerland, where it is a rare surname, and France. Measured by absolute frequency, it most frequently occurs in Germany, the United States, and France.
| VARIANT | COUNTRY |
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| Duffner | Switzerland, France, United States, United Kingdom, Germany |
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josef gustav duffner German politician (1868-1935), DE (b. 1868) |
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| hans duffner DE (b. 1908) |
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| heinz duffner German politician (1926-1984), DE (b. 1926) |
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| wolfgang duffner German author, DE (b. 1937) |
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| mark duffner American football player and coach, US (b. 1953) |
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| georg duffner German entrepreneur, DE (b. 1954) |
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| christof duffner ski jumper, DE (b. 1971) |
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| andreas duffner researcher |
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| maria antónia duffner Ph.D. |
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| tobias duffner German footballer, DE (b. 1983) |
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| j. patrick duffner |
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| markus duffner |
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| r. t. duffner |
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| frank duffner |
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| arthur duffner |
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