Cognomen Hayan (Hayan 
, Хаян 
) , in all the world, is quite a rare last name. The last name Hayan is characteristic of Bahrain, where it is quite a rare surname, Somalia, and Saudi Arabia. Measured by absolute frequency, it is commonest in Pakistan, Indonesia, and Saudi Arabia. Also, Hayan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Hayan | Saudi Arabia, South Korea, Syria, Indonesia, Pakistan |
| Хаян | Ukraine, Kazakhstan, Armenia, Russia, Belarus |