All over the world, Danielsen (Danielsen 
, Даниэльсен) is a very rare boy's first name. The given name Danielsen is habitual in Eastern Asia, particularly China, where it is an extremely rare boy's name. Much more prevalently, Danielsen is the last name as well as the forename.
| VARIANT | COUNTRY |
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| Danielsen | Denmark, Germany, Norway, Sweden, United States |
Danielson, Danielssen, and Danielsson
| erasmus danielsen DE (b. 1743) |
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| berndt danielsen (b. 1881) |
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páll danielsen actor (b. 1964) |
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| aase speilberg danielsen Norwegian diplomat (b. 1935) |
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| steen danielsen Danish footballer, DK (b. 1950) |
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| finn danielsen Danish sports shooter, DK (b. 1955) |
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| kasper danielsen Danish architect (b. 1957) |
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| flemming danielsen Danish basketball player, DK (b. 1960) |
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| flemming danielsen college basketball player (1980–1980) Iowa State |
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| stine a danielsen researcher |
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| thore danielsen Cand.real Universitetet i Tromsø 1982 |
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| finn danielsen |
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