Surname Mousoian (Мусоян 
, Mousoian 
) , in the world, is a rare family name. The family name Mousoian is habitual in Russia, where it is a rare surname, Ukraine, where it is a very rare surname, and the United States, where it is an extremely rare surname. Also, Mousoian is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Мусоян | Armenia, Russia, Ukraine |
| Mousoian | United States |