In the world, ريهو (Riho 
, Sayashi 
, ريهو) is a rare epicene first name. The given name ريهو is habitual in Estonia, where it is quite a rare boy's name, Japan, where it is a rare principally feminine, but scarcely male name, and Sweden, where it is a rare male name. In absolute terms, the name is most common in Japan, Estonia, and India. Very seldom, ريهو is the last name as well as the forename.