Cognomen Sheynyn (Sheynyn 
, Шеинин 
) , around the globe, is a very rare last name. The surname Sheynyn is characteristic of Eastern Europe, particularly Russia, where it is a very rare surname. Much less frequently, Sheynyn is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sheynyn | Brazil, United States |
| Шеинин | Russia |