Family name Tuomainen (Tuomainen 
) , around the globe, is quite a rare last name. The cognomen Tuomainen is characteristic of Northern Europe, particularly Finland, where it is quite a common surname, Estonia, where it is a rare surname, and Sweden.
| arvo tuomainen Finnish speed skater, FI (b. 1889) |
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raimo tuomainen Finnish sociologist and feminist, FI (b. 1957) |
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antti tuomainen Finnish author and journalist, FI (b. 1971) |
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marko tuomainen Finnish ice hockey player, FI (b. 1972) |
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| toivo tuomainen Finnish film actor (1926-2002), FI (b. 1926) |
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| ida tuomainen (b. 1916) |
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miikka tuomainen Finnish ice hockey player, FI (b. 1986) |
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| hannu tuomainen finnish film producer, FI (b. 1960) |
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| tomi-pekka tuomainen Finnish physician (M.D., Ph.D.), professor of epidemiology (University of Eastern Finland), FI (b. 1966) |
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| tomi tuomainen researcher ORCID ID = 0000-0002-2387-6369 |
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| katja tuomainen researcher |
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| tomi-pekka tuomainen researcher |
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| johanna tuomainen Finnish chess player, FI |
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| p tuomainen researcher |
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| helena tuomainen researcher |
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Mr, Anne, Anja, Arto, Asko, Atte, Kati, Paul, Pasi, Piia, Riku, Dora, Jani, Jari, Joni, Jere, Jusa, Juha, Juho, Tomi, Toni, Tero, Satu, Samu, Sami, Sari, Ms, Mia, Ann, Anu, Ari, Aki, Aku, Pia, Lea, Jan, Timo, Joe, Neo, Eva, Htm, Ira, Mari, Mona, Meri, Mika, Miia, Sara, Nea, and Tiia