Family name Bierti (Bierti 
) , across the world, is a very rare surname. The last name Bierti is habitual in Italy, where it is a very rare surname, Argentina, and Venezuela, where it is an extremely rare surname. Much less frequently, Bierti is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Bierti | United Kingdom, Italy, Brazil, Venezuela, Argentina |
| osvaldo bierti IT (b. 1859) |
|