Cognomen Бухнер (Buchner 
, Buhner 
, Бухнер 
, among others...) , around the world, is a common surname. The last name Бухнер is characteristic of Austria, where it is quite a common surname, Germany, and Bosnia and Herzegovina, where it is quite a rare surname. Not in comparison with a country's population, the name is most common in Germany, Austria, and the United States. Much less frequently, Бухнер is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Buchner | Brazil, South Africa, United States, Germany, Austria |
| Buhner | Brazil, Switzerland, South Africa, United States, Germany |
| Бухнер | Belarus, Russia, Kazakhstan, Ukraine |
| Buxner | United States, Georgia |
| Bukhner | Russia |