Surname Koehnen (Koehnen 
) , worldwide, is a rare last name. The surname Koehnen is habitual in Germany, where it is a rare surname, the United States, and Canada, where it is a very rare surname.
| VARIANT | COUNTRY |
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| Koehnen | Canada, Spain, France, Germany, United States |
| dennis koehnen German actor |
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| julie koehnen actress |
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| john koehnen American politician – Minnesota -House 1891-92 (District 37), US |
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| jessi koehnen |
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