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In the entire world, Kirstein (Kirstein , Кирштайн, Кирштейн ) is a rare mostly female, but infrequently boy's given name. The first name Kirstein is habitual in the United Kingdom, where it is a very rare principally female, but very seldom male name, Germany, where it is a very rare epicene name, and Philippines, where it is a very rare predominantly feminine, but very seldom masculine name. Measured by absolute frequency, it is the most numerous in the United States, the United Kingdom, and Germany. More prevalently, Kirstein is the last name as well as the forename.
Kirstein is also a name for the fictitious and mythical characters: .