Last name Кадзуя (Kazuya 
, Kaduya 
, Кадзуя 
) , all over the world, is quite a rare cognomen. The cognomen Кадзуя is characteristic of Malawi, where it is quite a rare surname, Japan, and Indonesia, where it is a rare surname. In absolute terms, it most frequently occurs in Japan, Indonesia, and China. Also, Кадзуя is the forename as well as the last name.