Surname ヒサキ (ヒサキ 
, Hisaki 
) , all around the world, is quite a rare family name. The cognomen ヒサキ is habitual in Japan, where it is quite a rare surname, Singapore, where it is a rare surname, and Argentina, where it is a very rare surname. Measured by absolute frequency, it is the most numerous in Japan, Argentina, and China. Very seldom, ヒサキ is the forename as well as the last name.