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Cognomen Harden (Harden , הרדן , هاردن, along with others...) , in the world, is a common family name. The cognomen Harden is habitual in the United States, where it is quite a rare surname, New Zealand, and Australia. In absolute terms, this name is the most popular in the United States, the United Kingdom, and Australia. Very seldom, Harden is the forename as well as the last name.