Surname Кадзуко (Kazuko 
, Кадзуко 
) , in all the world, is quite a rare cognomen. The family name Кадзуко is characteristic of Japan, where it is a rare surname, Spain, where it is a very rare surname, and Myanmar. Measured by absolute frequency, the name is most common in Japan, China, and Indonesia. More prevalently, Кадзуко is the forename as well as the last name.