Cognomen Rousan (Rousan 
, Русан 
) , in all the world, is quite a rare last name. The family name Rousan is habitual in Bulgaria, where it is quite a rare surname, Armenia, and Jordan. Not in comparison with a country's population, it is the most numerous in Jordan, Bulgaria, and Ukraine. Likewise, Rousan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rousan | United Arab Emirates, Jordan, Bulgaria, United States, India |
| Русан | Armenia, Russia, Belarus, Bulgaria, Ukraine |
| liqa a rousan researcher |
|