Family name Bayadyan (Баядян 
, Bayadyan 
) , in the world, is a rare surname. The surname Bayadyan is habitual in Armenia, where it is quite a rare surname, Belarus, where it is a rare surname, and Russia, where it is a very rare surname. Likewise, Bayadyan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Баядян | Belarus, Russia, Ukraine, Armenia |
| Bayadyan | Russia, Armenia, United States |