Family name Demirjan (Демирян 
, Demirjan 
) , in all the world, is a very rare surname. The surname Demirjan is habitual in Russia, where it is a very rare surname, Georgia, and Venezuela, where it is an extremely rare surname. Likewise, Demirjan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Демирян | Russia, Armenia |
| Demirjan | Venezuela, Georgia |