Surname Фаерштеын (Фаерштеын 
) , in the entire world, is an extremely rare cognomen. The family name Фаерштеын is habitual in Eastern Europe, particularly Russia, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Фаерштеын | Russia |
Faershteyn, and Fayershteyn