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Cognomen Calmon (Calmon
, 卡蒙
) , worldwide, is quite a common surname. The family name Calmon is habitual in Brazil, where it is quite a rare surname, France, and Czechia, where it is a rare surname. Measured by absolute frequency, it most frequently occurs in Brazil, France, and the United States. Much less frequently, Calmon is the forename as well as the last name.