In all the world, Яи (Yai 
, Яи 
) is a common epicene first name. The first name Яи is habitual in Mongolia, where it is quite a rare gender-neutral name, Japan, where it is quite a rare female name, and Ethiopia, where it is quite a rare largely male, but uncommonly girly name. In absolute terms, it most frequently occurs in Japan, India, and Ethiopia. Also, Яи is the last name as well as the forename.