Family name Фильштейн (Фильштейн 
, Filshtein 
) , in the entire world, is a very rare cognomen. The last name Фильштейн is habitual in Russia, where it is a very rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Фильштейн | Russia |
| Filshtein | United States |
| фильштейн михаил яковлевич Russian writer and poet, RU (b. 1930) |
|