Surname Mitsuharu (Mitsuharu 
) , all around the world, is a rare cognomen. The surname Mitsuharu is habitual in Japan, where it is a rare surname, Singapore, where it is a very rare surname, and Italy. Measured by absolute frequency, it most frequently occurs in Japan, China, and Italy. Much less frequently, Mitsuharu is the forename as well as the last name.