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Surname Ghaïlan (غيلان , Ghaïlan) , across the world, is quite a common cognomen. The cognomen Ghaïlan is habitual in Western Asia, particularly Yemen, where it is quite a common surname, Saudi Arabia, where it is quite a rare surname, and Syria. Measured by absolute frequency, it is the most numerous in Western Asia, particularly Yemen, Saudi Arabia, and Iraq. Also, Ghaïlan is the forename as well as the last name.