Family name Clemmen (Clemmen 
) , around the world, is a very rare last name. The cognomen Clemmen is habitual in Belgium, where it is a rare surname, and the United States, where it is an extremely rare surname. Very seldom, Clemmen is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Clemmen | South Africa, Belgium, United States, Philippines |
| stéphane clemmen researcher ORCID ID = 0000-0003-0192-4662 |
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| joost clemmen |
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