Cognomen Nikolajsen (Nikolajsen 
) , in all the world, is quite a rare last name. The cognomen Nikolajsen is characteristic of Greenland, where it is quite a common surname, Denmark, and Saudi Arabia, where it is a rare surname. Measured by absolute frequency, the name is most common in Denmark, Saudi Arabia, and Poland.
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| Nikolajsen | Denmark, Germany, Poland, Greenland, Saudi Arabia |
Nicolaisen, Nicolaysen, Nicolayssen, Nikolaisen, Николайсен, and Ніколайсен
| gunnar nikolajsen Danish painter (b. 1898) |
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| aksel nikolajsen Danish pole vaulter (b. 1901) |
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niklas nikolajsen Entrepreneur (b. 1975) |
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| freddie holm nikolajsen Danish painter (b. 1942) |
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| kent nikolajsen Danish journalist (1970-2019), DK (b. 1970) |
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| rasmus nikolajsen Danish poet (b. 1977) |
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| louise f nikolajsen researcher |
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| annie nikolajsen researcher |
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| nikolajsen l researcher |
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| helene nikolajsen researcher (ORCID 0000-0002-9404-4463) |
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| eigil nikolajsen Danish cyclist, born 1998 (b. 1998) |
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| lone nikolajsen researcher |
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| line kirsten nikolajsen (b. 1991) |
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Mr, Sune, Anna, Anne, Anja, Arne, Asii, Aske, Bent, Bjã, Kari, Kaja, Kent, Kurt, Poul, Rene, Lars, Leif, Lene, Line, Lisa, Lise, Sine, Sara, Mike, Maja, Ms, Bo, Mie, Mia, Sam, Sã, Kaj, Kim, Pia, Dan, Lone, Lis, Jã, Tim, Eva, Ina, Ida, Ian, Ole, Ove, Mark, Mads, Jan, and Jane