Surname Barthlen (Barthlen 
) , around the globe, is a very rare family name. The cognomen Barthlen is habitual in France, where it is a very rare surname, Germany, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Barthlen | United States, France, Germany |
| andreas michael barthlen Dr. rer. nat. Technische Universität Kaiserslautern 2016 |
|
|
| johann barthlen |
|