Cognomen Ahadzhanyan (Ahadzhanyan 
) , all over the world, is an extremely rare last name. The surname Ahadzhanyan is characteristic of Eastern Europe, particularly Ukraine, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Ahadzhanyan | Ukraine |
Агаджаньян, Агаджанян, and Ахаджанян