Surname Хисао (Hisao 
, Хисао 
) , all over the world, is quite a rare cognomen. The family name Хисао is characteristic of Japan, where it is quite a rare surname, Hungary, where it is a very rare surname, and China. Measured by absolute frequency, this name is the most popular in Japan, China, and the United States. Also, Хисао is the forename as well as the last name.