Cognomen Bierny (Bierny 
) , across the world, is a rare family name. The cognomen Bierny is characteristic of Gabon, where it is quite a rare surname, Belgium, where it is a rare surname, and France, where it is an extremely rare surname. Very seldom, Bierny is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Bierny | Belgium, United States, Philippines, Gabon, France |