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Surname Kaido (Kaido , Кайдо , Каидо ) , across the world, is a rare cognomen. The cognomen Kaido is habitual in Senegal, where it is a rare surname, Estonia, and Belarus. Measured by absolute frequency, this name is the most popular in Indonesia, Senegal, and the United States. More prevalently, Kaido is the forename as well as the last name.