Family name Rajaniemi (Rajaniemi 
) , globally, is quite a rare surname. The surname Rajaniemi is habitual in Northern Europe, particularly Finland, where it is quite a common surname, Sweden, where it is quite a rare surname, and Estonia. Not in comparison with a country's population, the name is most common in Finland, the United States, and Sweden.
| VARIANT | COUNTRY |
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| Rajaniemi | Estonia, Canada, Sweden, United States, Finland |
| reino rajaniemi Finnish author, FI (b. 1919) |
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hannu rajaniemi Finnish businessman and writer, FI (b. 1978) |
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| hannu rajaniemi Finnish association football player (1953-2008), FI (b. 1953) |
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| therese rajaniemi Swedish politician, SE (b. 1964) |
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| katja rajaniemi Finnish ski orienteer, FI |
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| juho rajaniemi researcher |
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| pirjo rajaniemi botanist |
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| hannu rajaniemi researcher |
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| tara k. rajaniemi researcher |
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| hannu rajaniemi Ph.D. University of Edinburgh 2006 |
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| sari rajaniemi FI |
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| anneli rajaniemi FI |
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| janette rajaniemi FI |
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| sami rajaniemi Finnish ice hockey goaltender, FI (b. 1992) |
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| matias rajaniemi Finnish ice hockey player, FI |
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