Cognomen Bjern (Bjern 
, بيورن 
) , in the world, is a very rare last name. The cognomen Bjern is characteristic of Estonia, where it is a rare surname, and Iran, where it is a very rare surname. Likewise, Bjern is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Bjern | Philippines, Estonia, South Africa, United States, Germany |
| بيورن | Iran |