Family name Tuomikoski (Tuomikoski 
) , worldwide, is a rare cognomen. The cognomen Tuomikoski is habitual in Northern Europe, particularly Finland, where it is quite a common surname, Estonia, where it is a rare surname, and Sweden. Not in comparison with a country's population, it is the most numerous in Finland, the United States, and Sweden.
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| Tuomikoski | Estonia, Finland, Sweden, New Zealand, United States |
| antti tuomikoski Finnish politician (1842-1932), FI (b. 1842) |
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tommy tuomikoski US (b. 1907) |
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| samuli tuomikoski Finnish politician (1875-1960), FI (b. 1875) |
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| yrjö tuomikoski Finnish head teacher, FI (b. 1878) |
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| jukka tuomikoski Finnish politician (1884-1956), FI (b. 1884) |
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| jaakko tuomikoski Finnish journalist, FI (b. 1885) |
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| juho tuomikoski Finnish marathon runner, FI (b. 1888) |
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| aino tuomikoski Finnish translator (1889-1958), FI (b. 1889) |
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| erkki tuomikoski Finnish politician and journalist, FI (b. 1892) |
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| risto tuomikoski Finnish botanist and entomologist (1911-1989), FI (b. 1911) |
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| tuomikoski, pentti (b. 1912) |
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| sirkka tuomikoski Finnish poet, FI (b. 1929) |
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| eero tuomikoski Finnish film director, FI (b. 1935) |
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| inkeri tuomikoski Finnish translator, FI (b. 1935) |
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| pekka tuomikoski Finnish non-fiction writer, FI (b. 1975) |
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Mr, Timo, Tiia, Essi, Eric, Emma, Eija, Eero, Eetu, Heli, Veli, Fiia, Olli, Osku, Outi, Oona, Maria, Marko, Marjo, Matti, Maiju, Milla, Tina, Tero, Juha, Joni, Ms, Anu, Ari, Kai, Joe, Esa, Eva, Mari, Mary, Sari, Mirva, Satu, Anne, Anni, Arto, Aino, Aija, Kati, Pasi, Reva, Jack, Jari, Suvi, and Minna