Surname Rouhiainen (Rouhiainen 
) , all over the world, is quite a rare cognomen. The family name Rouhiainen 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 most frequently occurs in Finland, Sweden, and Canada.
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| Rouhiainen | Australia, Canada, Finland, Sweden, United States |
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jere rouhiainen Finnish ice hockey player, FI (b. 1996) |
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| ulla-maija rouhiainen Finnish non-fiction writer, FI (b. 1953) |
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| harri rouhiainen FI (b. 1960) |
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| anne rouhiainen Finnish art critic, FI |
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| ari rouhiainen researcher ORCID ID = 0000-0003-2492-4788 |
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| elina rouhiainen Finnish writer, FI (b. 1988) |
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| jukka rouhiainen FI |
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| hannele rouhiainen FI |
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| mirja rouhiainen FI |
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| risto rouhiainen FI |
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| teemu rouhiainen Finnish pesäpallo player, FI (b. 1994) |
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Mr, Atte, Kari, Pasi, Piia, Jani, Jari, Joni, Jere, Juri, Juha, Juho, Jyri, Taru, Tomi, Toni, Topi, Timo, Tiia, Nico, Niko, Nina, Aija, Aini, Asko, Adam, Ms, Mia, Anu, Ari, Aki, Aku, Roy, Lea, Tea, Ida, Ella, Mari, Mika, Miia, Sari, Sami, Satu, Simo, Anna, Anne, Anja, Arto, Mary, and Essi