Globally, Mamaj (Mamaj 
, Мамай 
) is a rare gender-neutral first name. The first name Mamaj is habitual in Kazakhstan, where it is quite a rare boy's name, Kyrgyzstan, where it is quite a rare principally masculine, but very seldom female name, and Azerbaijan, where it is quite a rare boy's name. Measured by absolute frequency, it is the most numerous in Kazakhstan, India, and Azerbaijan. More frequently, Mamaj is the last name as well as the forename.