In the world, ก้อย (Koi 
, Koiu 
, Koiy 
) is quite a common epicene first name. The forename ก้อย is habitual in Macao, where it is quite a rare male name, Japan, where it is quite a rare mostly masculine, but infrequently feminine name, and Oman, where it is a rare boy's name. Measured by absolute frequency, it is the most numerous in Japan, India, and Indonesia. Also, ก้อย is the last name as well as the forename.