Around the globe, ヒサオ (Hisao 
, ヒサオ ) is a rare boy's first name. The first name ヒサオ is characteristic of Japan, where it is a rare male name, the United States, where it is a very rare masculine name, and Brazil, where it is an extremely rare masculine name. Not in comparison with a country's population, the name is most common in Japan, China, and the United States. More frequently, ヒサオ is the last name as well as the forename.