Surname Kazuhiro (Kazuhiro 
, カズヒロ , 和博 , and others...) , worldwide, is a common last name. The surname Kazuhiro is characteristic of Japan, where it is quite a common surname, Singapore, where it is a rare surname, and Hungary. In absolute terms, the name is most common in Japan, China, and Indonesia. Much less frequently, Kazuhiro is the forename as well as the last name.