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Cognomen 高木 (Takagi , Takaki , 高木 ) , worldwide, is quite a common family name. The family name 高木 is habitual in Hong Kong, where it is quite a rare surname, Japan, and Brazil, where it is a rare surname. In absolute terms, it is commonest in Brazil, Japan, and the United States. Much less frequently, 高木 is the forename as well as the last name.