Family name Фельшин (Фельшин 
, Felshin 
) , around the world, is a very rare cognomen. The last name Фельшин is characteristic of Belarus, where it is a very rare surname, Russia, and Canada. Not in comparison with a country's population, this name is the most popular in Russia, the United States, and Belarus.
| VARIANT | COUNTRY |
|---|---|
| Фельшин | Belarus, Russia, Ukraine |
| Felshin | Canada, United States |