Cognomen Bergun (Bergun 
) , all over the world, is a very rare surname. The cognomen Bergun is habitual in Norway, where it is a rare surname, Argentina, where it is a very rare surname, and Canada, where it is an extremely rare surname. Not in comparison with a country's population, the name is most common in Norway, Argentina, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Bergun | Norway, Canada, United States, Argentina, Russia |
| bergun berkaw (b. 1791) |
|