Surname Baerthel (Baerthel 
) , in the world, is a rare cognomen. The cognomen Baerthel is habitual in Germany, where it is a rare surname, New Zealand, where it is a very rare surname, and France. Not in comparison with a country's population, the name is most common in Germany, the United States, and France.
| VARIANT | COUNTRY |
|---|---|
| Baerthel | Germany, United Kingdom, United States, Canada, France |