Cognomen Iajian (Яжян 
, Iajian 
) , around the world, is a rare surname. The cognomen Iajian is habitual in Georgia, where it is quite a rare surname, Russia, where it is a very rare surname, and Ukraine. Very seldom, Iajian is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Яжян | Armenia, Russia, Ukraine |
| Iajian | Georgia |