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, Indonesia, Pakistan, Syria |
| Хаян | Kazakhstan, Russia, Belarus, Armenia, Ukraine |