Surname Ясын (Yasyn 
, Ясын 
, Jasyn 
) , throughout the world, is a rare family name. The cognomen Ясын is characteristic of Azerbaijan, where it is quite a rare surname, Kyrgyzstan, where it is a rare surname, and Egypt. In absolute terms, the name is most common in Egypt, Azerbaijan, and Morocco. Likewise, Ясын is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Yasyn | Saudi Arabia, Iraq, Syria, Morocco, Egypt |
| Ясын | Kazakhstan, Armenia, Kyrgyzstan, Azerbaijan, Russia |
| Jasyn | Philippines, Australia, Canada, South Africa, United States |
| Iasyn | Brazil |