Family name Мусоян (Мусоян 
, Musoian 
, Mousoian 
) , across the world, is a rare cognomen. The surname Мусоян is habitual in Russia, where it is a rare surname, Georgia, where it is a very rare surname, and Ukraine. Also, Мусоян is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Мусоян | Ukraine, Russia, Armenia |
| Musoian | Georgia |
| Mousoian | United States |