Globally, ヤイ (Yayi 
, ヤイ 
) is quite a rare epicene first name. The forename ヤイ is habitual in Puerto Rico, where it is quite a rare feminine name, Panama, and Guinea, where it is a rare boy's name. In absolute terms, this name is the most popular in India, Indonesia, and Nigeria. Likewise, ヤイ is the last name as well as the forename.