Family name Tuomanen (Tuomanen 
) , across the world, is a rare last name. The cognomen Tuomanen is habitual in Finland, where it is quite a rare surname, and the United States, where it is an extremely rare surname.
| elaine tuomanen American biologist (b. 1951) |
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| brian tuomanen Ph.D. University of Missouri - Columbia 2017 |
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| jukka-pekka tuomanen Finnish footballer, FI (b. 1985) |
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| anne tuomanen Finnish ice hockey player, FI (b. 1987) |
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