In the world, Estai (Естай 
, Esteo 
, Estay 
) is quite a rare predominantly masculine, but very infrequently feminine first name. The forename Estai is habitual in Azerbaijan, where it is quite a rare boy's name, Kazakhstan, where it is quite a rare principally boy's, but very seldom female name, and Peru, where it is a very rare boy's name. Not in comparison with a country's population, it is the most numerous in Kazakhstan, Azerbaijan, and China. More frequently, Estai is the last name as well as the forename.