Last name بايرن (Bayern 
, بايرن, Baern 
) , all over the world, is quite a rare surname. The cognomen بايرن is characteristic of Algeria, where it is quite a rare surname, Albania, and Tunisia, where it is a rare surname. In absolute terms, the name is most common in Algeria, Germany, and Morocco. Very seldom, بايرن is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Bayern | Germany, Algeria, Indonesia, Morocco, Democratic Republic of the Congo |
| Baern | United States |