Cognomen הרדן (Harden 
, Herden , הרדן 
) , across the world, is a common surname. The cognomen הרדן is characteristic of the United States, where it is quite a rare surname, Germany, and Australia. Not in comparison with a country's population, it is the most numerous in the United States, Germany, and the United Kingdom. Much less frequently, הרדן is the forename as well as the last name.
| הרדן אשכנזי IL (b. 1908) |
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| דן הרדן Israeli actor, IL (b. 1926) |
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| דוד הרדן IL (b. 1926) |
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