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Cognomen Amundsen (အာ , Amundsen , Амундсен ) , across the world, is a common last name. The last name Amundsen is characteristic of Norway, where it is a common surname, Seychelles, where it is quite a common surname, and Denmark, where it is quite a rare surname. Measured by absolute frequency, the name is most common in Norway, the United States, and Myanmar. More frequently, Amundsen is the forename as well as the last name.