Surname Diyaz (Diyaz 
, Дияз 
) , in the world, is a rare family name. The cognomen Diyaz is habitual in Morocco, where it is a rare surname, Kyrgyzstan, and Pakistan, where it is a very rare surname. In absolute terms, it most frequently occurs in Pakistan, Morocco, and Indonesia. Likewise, Diyaz is the forename as well as the last name.