Koppen is a surname. Notable people with the surname include:
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Dan Koppen (born 1979), American football offensive lineman
* (1929–1990), German literary scholar
* (1855–1922), German author
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Otto C. Koppen (1901–1991), American aircraft engineer
See also
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*
Koeppen, surname
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Köppen, surname
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Lene Køppen (born 1953), Danish badminton player
{{surname, Koppen