Last name Klar-Buchenberger (Klar-Buchenberger 
) , around the world, is an extremely rare cognomen. The family name Klar-Buchenberger is characteristic of Western Europe, particularly Germany, where it is an extremely rare surname. Parts of the name also exists independently as a last name Klar, and a last name Buchenberger.
| VARIANT | COUNTRY |
|---|---|
| Klar-Buchenberger | Germany |