Family name Suomalainen (Suomalainen 
, Суомалайнен 
) , globally, is quite a rare cognomen. The last name Suomalainen is habitual in Northern Europe, particularly Finland, where it is quite a common surname, Estonia, where it is quite a rare surname, and Latvia, where it is a rare surname. Not in comparison with a country's population, it is the most numerous in Finland, Sweden, and Belarus.
| VARIANT | COUNTRY |
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| Suomalainen | Australia, Sweden, Finland, United States, Estonia |
| Суомалайнен | Belarus, Russia, Kazakhstan, Ukraine |
Suoma, Suomi, Suominen, Суомалаинен, and Суоминен
| olaus georgii suomalainen FI (b. 1580) |
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| samuli suomalainen Finnish journalist (1850-1907), RU (b. 1850) |
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paavo suomalainen Finnish ornithologist, zoophysiologist and professor of zoology, FI (b. 1907) |
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| aapeli suomalainen Finnish politician, FI (b. 1866) |
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| juho suomalainen Finnish politician, FI (b. 1868) |
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kari suomalainen Finnish political cartoonist, FI (b. 1920) |
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| vihtori suomalainen Finnish businessperson, FI (b. 1881) |
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lippe suomalainen Finnish writer, singer and actress, FI (b. 1931) |
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| e. w. suomalainen Finnish biologist, FI (b. 1883) |
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| jaakko suomalainen Finnish teacher and banker, FI (b. 1885) |
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| set suomalainen Finnish agricultural consultant and developer of dairy industry (1886-1975) (b. 1886) |
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| lauri suomalainen FI (b. 1877) |
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| yrjö suomalainen Finnish violinist, music critic and music writer, FI (b. 1893) |
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| kyyros suomalainen FI (b. 1884) |
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| johannes suomalainen FI (b. 1890) |
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Mr, Anna, Anne, Anni, Anja, Arto, Arja, Aino, Airi, Aila, Auli, Atte, Aaro, Aatu, Aapo, Clem, Kari, Kati, Kira, Kiti, Kiia, Pasi, Alex, Suvi, Simo, Sini, Ms, Anu, Ari, Aki, Aku, Kai, Kim, Pia, Pã, Esa, Piia, Eva, Mari, Mary, Meri, Mira, Mika, Sara, Sari, Sami, Satu, Sina, Ida, and Pyry