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Cognomen Ryden (Ryden , ريدين , ライデン ) , throughout the world, is quite a rare last name. The cognomen Ryden is habitual in Northern Europe, particularly Sweden, where it is quite a common surname, Denmark, where it is quite a rare surname, and Norway, where it is a rare surname. In absolute terms, the name is most common in Sweden, the United States, and the United Kingdom. Very seldom, Ryden is the forename as well as the last name.