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, Morocco, Syria, Egypt, Iraq |
| Ясын | Azerbaijan, Kazakhstan, Armenia, Russia, Kyrgyzstan |
| Jasyn | South Africa, Philippines, Australia, United States, Canada |
| Iasyn | Brazil |