Surname Fermanyan (Fermanyan 
, Ферманьян 
) , throughout the world, is a very rare family name. The surname Fermanyan is habitual in Russia, where it is a very rare surname, the United States, where it is an extremely rare surname, and Canada. Much less frequently, Fermanyan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Fermanyan | United States, Canada, Argentina |
| Ферманьян | Russia |