Surname Налчаджян (Nalchajyan 
, Налчаджян 
) , in the entire world, is a very rare last name. The last name Налчаджян is habitual in Armenia, where it is a rare surname, Russia, where it is an extremely rare surname, and Ukraine. Measured by absolute frequency, it most frequently occurs in Armenia, Russia, and the United States. Much less frequently, Налчаджян is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Nalchajyan | Mexico, China, Armenia, United States |
| Налчаджян | Russia, Ukraine |