Family name Kazuharu (Kazuharu 
) , throughout the world, is a rare surname. The family name Kazuharu is habitual in Japan, where it is a rare surname, Cambodia, where it is a very rare surname, and Chile, where it is an extremely rare surname. In absolute terms, this name is the most popular in Japan, China, and Cambodia. Likewise, Kazuharu is the forename as well as the last name.