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Surname Sherwan (شيروان , Sherwan ) , in the entire world, is quite a rare cognomen. The last name Sherwan is habitual in Iraq, where it is quite a rare surname, Syria, where it is a rare surname, and Iran. Not in comparison with a country's population, this name is the most popular in Iraq, Iran, and Pakistan. More frequently, Sherwan is the forename as well as the last name.