Family name جاج (Jaj 
, Gag 
, جاج 
) , in all the world, is quite a common cognomen. The cognomen جاج is characteristic of Puerto Rico, where it is quite a rare surname, Oman, and Saudi Arabia, where it is a rare surname. In absolute terms, it most frequently occurs in India, Pakistan, and Algeria. Likewise, جاج is the forename as well as the last name.