Throughout the world, Какин (Kakin 
, Какин 
) is a rare epicene first name. The first name Какин is habitual in Macao, where it is quite a rare masculine name, Kyrgyzstan, where it is quite a rare predominantly feminine, but very seldom male name, and Hong Kong, where it is quite a rare masculine name. Measured by absolute frequency, this name is the most popular in Kyrgyzstan, Hong Kong, and India. Very seldom, Какин is the last name as well as the forename.