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Across the world, كيلر (Keller , Keler , كيلر ) is quite a rare epicene forename. The first name كيلر is habitual in Guatemala, where it is quite a rare masculine name, Switzerland, where it is quite a rare epicene name, and Israel, where it is a rare primarily female, but very seldom male name. In absolute terms, it is the most numerous in Brazil, the United States, and Guatemala. Much more prevalently, كيلر is the last name as well as the forename.
كيلر is also a name for the fictitious and mythical characters: Keller frères , the Honoré de Balzac character, Les Petits Bourgeois.