Family name Olafsen (Olafsen 
) , globally, is quite a rare surname. The cognomen Olafsen is habitual in Northern Europe, particularly Norway, where it is quite a common surname, Denmark, where it is a rare surname, and Sweden. Not in comparison with a country's population, it is the most numerous in Norway, the United States, and Australia.
| jørgen olafsen Norwegian politician (1817-1893), NO (b. 1817) |
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| olaf olafsen Norwegian priest, NO (b. 1843) |
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| karl bolivar olafsen Norwegian politician, NO (b. 1880) |
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| reidar olafsen Norwegian boxer (1910-1989) (b. 1910) |
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| kåre adolf olafsen Norwegian resistance member, NO (b. 1920) |
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helene olafsen Norwegian snowboarder, NO (b. 1990) |
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| tore olafsen Norwegian author (b. 1943) |
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| frank olafsen Norwegian footballer, NO (b. 1944) |
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| anne gro olafsen Norwegian politician (b. 1958) |
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| espen olafsen Norwegian association football player, NO (b. 1965) |
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| nathan p olafsen researcher |
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| claus olafsen botanist |
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| stian olafsen Norwegian politician (b. 1993) |
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