Family name Галустьян (Galustian 
, Galustyan 
, Galoustian 
) , around the globe, is quite a rare last name. The surname Галустьян is characteristic of Western Asia, particularly Georgia, where it is quite a rare surname, Cyprus, and Armenia. Measured by absolute frequency, it most frequently occurs in Russia, Georgia, and the United States. Much less frequently, Галустьян is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Galustian | France, Russia, Georgia, Greece, United States |
| Galustyan | Czechia, Russia, Greece, Armenia, United States |
| Galoustian | Canada, France, Australia, United States |
| Галустьян | Kazakhstan, Russia, Kyrgyzstan, Ukraine |
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