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 | France, Cameroon, Tunisia, Algeria, Morocco |
| Rouj | France, Tunisia, Algeria, United States, Morocco |