In the entire world, Yachai (ยาใจ 
, Yachai 
, ยะใจ ) is quite a rare mostly female, but seldom boy's first name. The first name Yachai is characteristic of Thailand, where it is quite a rare dominantly feminine, but uncommonly boy's name, and India, where it is an extremely rare epicene name. Very seldom, Yachai is the last name as well as the forename.