Family name Kupershtok (Kupershtok 
) , globally, is a very rare surname. The family name Kupershtok is habitual in the United States, where it is an extremely rare surname, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Kupershtok | Russia, United States |
| ahron kupershtok Ph.D. Technion-Israel Institute of Technology 2000 |
|
|
| roni kupershtok Ph.D. Technion-Israel Institute of Technology 2000 |
|