In the entire world, เย้ย (Yoei 
, Yey 
, Ridthee 
) is a rare epicene given name. The first name เย้ย is habitual in Latin America and the Caribbean, particularly the Dominican Republic, where it is quite a rare epicene name, Colombia, where it is a rare gender-neutral name, and Mexico, where it is a very rare unisex name. Much less frequently, เย้ย is the last name as well as the forename.