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Surname Haidak (Haidak ) , in all the world, is quite a rare cognomen. The last name Haidak is characteristic of Estonia, where it is quite a common surname, Finland, where it is a rare surname, and India, where it is a very rare surname. Measured by absolute frequency, it is the most numerous in India, Estonia, and Morocco. More prevalently, Haidak is the forename as well as the last name.