Cognomen Ершин (Ershin 
, Ершин 
) , across the world, is a rare surname. The last name Ершин is characteristic of Azerbaijan, where it is quite a rare surname, Kazakhstan, where it is a rare surname, and Russia, where it is a very rare surname. Much less frequently, Ершин is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ershin | Philippines, China |
| Ершин | Russia, Armenia, Azerbaijan, Kazakhstan |