Family name Koehn (Koehn 
, Коэн 
, كوهن 
) , all over the world, is a common surname. The last name Koehn is habitual in Germany, where it is quite a rare surname, the United States, and Norway. Not in comparison with a country's population, it is commonest in the United States, Germany, and Canada.
| h. h. koehn American politician, US (b. 1866) |
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| emil koehn DE (b. 1859) |
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| franz koehn German production designer (1889-2000), DE (b. 1889) |
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| otto koehn German business executive, DE (b. 1891) |
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| henry koehn German researcher (1892-1963), DE (b. 1892) |
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nancy koehn American business historian, US (b. 1959) |
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| walter friedrich julius koehn (b. 1900) |
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| phyllis koehn All-American Girls Professional Baseball League player, US (b. 1922) |
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| horst koehn DE (b. 1915) |
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| ilse koehn German writer, DE (b. 1929) |
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| barbara koehn German historian, DE (b. 1932) |
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| herma koehn German actress, DE (b. 1944) |
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| hans-günther koehn (b. 1937) |
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| gottfried koehn German politician, DE (b. 1948) |
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| hermann-ulrich koehn DE (b. 1939) |
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