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Cognomen Gaidin (Gaidin , Гайдин , Гаидин ) , around the globe, is a rare surname. The surname Gaidin is characteristic of Russia, where it is a rare surname, Kazakhstan, and Belarus, where it is a very rare surname. In absolute terms, the name is most common in Russia, Indonesia, and Kazakhstan. Much less frequently, Gaidin is the forename as well as the last name.