Cognomen Ajj (อาจ 
, Ajj 
) , in the entire world, is quite a common surname. The surname Ajj is characteristic of Indonesia, where it is quite a rare surname, United Arab Emirates, where it is a rare surname, and Qatar. Measured by absolute frequency, it most frequently occurs in Indonesia, Pakistan, and Saudi Arabia. Much less frequently, Ajj is the forename as well as the last name.