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Cognomen Merdan (Merdan , مردان , Мердан ) , globally, is quite a common surname. The cognomen Merdan is habitual in Bosnia and Herzegovina, where it is quite a common surname, Turkmenistan, where it is quite a rare surname, and Turkey. Measured by absolute frequency, it most frequently occurs in Turkey, Iran, and Iraq. Also, Merdan is the forename as well as the last name.