Cognomen Santrosyan (Santrosyan 
) , in the entire world, is a rare last name. The last name Santrosyan is habitual in Armenia, where it is quite a rare surname, Greece, where it is a very rare surname, and Spain. Not in comparison with a country's population, it most frequently occurs in Armenia, Spain, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Santrosyan | Russia, Spain, Greece, United States, Armenia |