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Worldwide, קלר (Keller , Cläre , Köhler ) is quite a rare epicene forename. The forename קלר is habitual in Switzerland, where it is quite a rare gender-neutral name, Guatemala, where it is a rare male name, and Israel, where it is a rare principally feminine, but scarcely masculine name. Not in comparison with a country's population, the name is most common in Brazil, Germany, and the United States. Predominantly, קלר is the last name as well as the forename.
קלר is also a name for the fictitious and mythical characters: Keller frères , the Honoré de Balzac character, Les Petits Bourgeois.