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Cognomen 孔 (Kong , Kung , 孔 ) , around the world, is a prevalent last name. The cognomen 孔 is characteristic of Hong Kong, where it is a common surname, Macao, and Malaysia (explore the name in all countries). Measured by absolute frequency, it is the most numerous in China, Malaysia, and Hong Kong. Very seldom, 孔 is the forename as well as the last name.