Surname Демирьян (Demirian 
, Демирьян 
) , globally, is a rare last name. The family name Демирьян is habitual in Sweden, where it is a rare surname, Romania, and Australia, where it is a very rare surname. In absolute terms, it is the most numerous in Russia, Sweden, and Romania. Much less frequently, Демирьян is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Demirian | Sweden, Romania, Australia, United States, Canada |
| Демирьян | Russia |