Cognomen Kuniharu (Kuniharu 
, Кунихару) , around the globe, is a rare surname. The surname Kuniharu is habitual in Japan, where it is a rare surname, Malaysia, where it is an extremely rare surname, and China. Measured by absolute frequency, the name is most common in Japan, China, and Mexico. Very seldom, Kuniharu is the forename as well as the last name.