Cognomen Fehn (Фен 
, Фэн 
, Fehn 
) , worldwide, is quite a rare surname. The cognomen Fehn is habitual in Germany, where it is quite a rare surname, Norway, and Austria, where it is a rare surname. Not in comparison with a country's population, this name is the most popular in Germany, the United States, and Russia. Much less frequently, Fehn is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Фен | Kazakhstan, Russia, Kyrgyzstan, Armenia, Ukraine |
| Фэн | Kazakhstan, Russia, Kyrgyzstan, Belarus, Armenia |
| Fehn | Norway, Brazil, Indonesia, United States, Germany |
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gustav fehn German general, DE (b. 1892) |
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theo fehn German author, DE (b. 1910) |
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sverre fehn Norwegian architect (1924-2009), NO (b. 1924) |
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| johann georg fehn German politician (1880-1950), DE (b. 1880) |
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| richard fehn DE (b. 1885) |
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| hans fehn German geographer, DE (b. 1903) |
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oliver fehn German writer (1960-2019), DE (b. 1960) |
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chris fehn American musician, US (b. 1973) |
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| helmut fehn (b. 1915) |
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| hans-georg fehn German water polo player (1943-1999), DE (b. 1943) |
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| ann clark fehn born:1945|died:1989|; Fehn, Ann; Fehn, Ann Clark (b. 1945) |
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| klaus fehn DE (b. 1936) |
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| armin fehn (b. 1967) |
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| møyfrid brenne fehn researcher (ORCID 0000-0002-7020-4071) |
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| jeff fehn college basketball player (1976–1978) Butler |
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