Surname روسان (Rosan 
, Rousan 
, روسان 
) , across the world, is quite a common cognomen. The cognomen روسان is habitual in Jordan, where it is quite a rare surname, Qatar, and Croatia. In absolute terms, it most frequently occurs in India, Jordan, and Indonesia. More frequently, روسان is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rosan | Philippines, Jordan, Nepal, Saudi Arabia, India |
| Rousan | Philippines, Jordan, Saudi Arabia, India, United States |
| روسان | Yemen, Jordan, Iraq, Palestinian Territory |