Family name Roussian (Roussian 
) , all over the world, is a very rare surname. The cognomen Roussian is habitual in Netherlands, where it is a very rare surname, Argentina, where it is an extremely rare surname, and France. Very seldom, Roussian is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Roussian | Argentina, France, Brazil, Netherlands |