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Cognomen Kroto (Carreto , Kroto , Крото) , around the globe, is a common last name. The last name Kroto is habitual in Guatemala, where it is quite a common surname, Mexico, where it is quite a rare surname, and Portugal. Measured by absolute frequency, it is commonest in Mexico, Guatemala, and the United States. Much less frequently, Kroto is the forename as well as the last name.