Last name Ahaj (Ahaj 
, Ахай 
, احاج 
) , in all the world, is a rare surname. The cognomen Ahaj is habitual in Slovenia, where it is a rare surname, Kazakhstan, and Morocco, where it is a very rare surname. In absolute terms, it is commonest in Kazakhstan, Morocco, and Yemen. Also, Ahaj is the forename as well as the last name.