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Cognomen Baidin (Baidin , Байдин , Баидин ) , all around the world, is quite a rare last name. The last name Baidin is habitual in Russia, where it is quite a rare surname, Kazakhstan, where it is a rare surname, and Lithuania. In absolute terms, it is commonest in Russia, Indonesia, and Kazakhstan. Very seldom, Baidin is the forename as well as the last name.