Surname Rtaj (رتاج 
, Rtaj 
) , across the world, is a common last name. The last name Rtaj is habitual in Sudan, where it is quite a common surname, Algeria, where it is quite a rare surname, and Iraq. In absolute terms, the name is most common in Northern Africa, particularly Sudan, Algeria, and Egypt. Also, Rtaj is the forename as well as the last name.