Family name Дадашян (Дадашян 
, Dadashian 
) , in the world, is a rare last name. The family name Дадашян is characteristic of Sweden, where it is a rare surname, Russia, where it is a very rare surname, and Iran. Not in comparison with a country's population, it is commonest in Russia, Iran, and the United Kingdom. Also, Дадашян is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Дадашян | Ukraine, Armenia, Russia |
| Dadashian | Georgia, United Kingdom, Sweden, United States, Iran |