Surname Kuehnen (Kuehnen 
) , worldwide, is a rare last name. The cognomen Kuehnen is habitual in Germany, where it is a rare surname, Austria, and Canada, where it is a very rare surname. Measured by absolute frequency, this name is the most popular in Germany, the United States, and Austria.
| VARIANT | COUNTRY |
|---|---|
| Kuehnen | United States, Austria, Germany, Canada, Brazil |