Surname Rouj (Rouge 
, Rouj 
) , in all the world, is a common cognomen. The surname Rouj is habitual in Algeria, where it is quite a common surname, Tunisia, and France, where it is quite a rare surname. Much less frequently, Rouj is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rouge | Morocco, Tunisia, France, Algeria, Cameroon |
| Rouj | Tunisia, France, United States, Algeria, Morocco |