All over the world, Kulbai (Кулбай 
, Кульбай , Kulbai 
) is a rare largely male, but infrequently female given name. The forename Kulbai is habitual in Azerbaijan, where it is quite a rare masculine name, Kazakhstan, where it is quite a rare predominantly masculine, but very seldom feminine name, and Kyrgyzstan, where it is a rare dominantly masculine, but infrequently feminine name. Measured by absolute frequency, this name is the most popular in Kazakhstan, Azerbaijan, and India. Much less frequently, Kulbai is the last name as well as the forename.