Surname Räihä (Räihä 
) , across the world, is a rare family name. The cognomen Räihä is characteristic of Finland, where it is quite a rare surname, Sweden, where it is a rare surname, and the United States, where it is an extremely rare surname.
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| Räihä | Sweden, Finland, United States |
| carl-erik räihä FI (b. 1904) |
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| lasse räihä Finnish middle-distance runner, FI (b. 1925) |
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freke räihä Swedish poet, SE (b. 1978) |
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juho räihä Finnish guitarist, FI |
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| niels räihä Finnish professor (1930-2013), FI (b. 1930) |
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| kari-jouko räihä Finnish computer scientist, FI (b. 1951) |
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| timo räihä Finnish politician, FI (b. 1953) |
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| mirja räihä Swedish politician, SE (b. 1959) |
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| carina räihä FI (b. 1967) |
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| ismo räihä researcher |
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| hannele räihä researcher |
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| juulia räihä researcher |
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| antti räihä Finnish historian, FI (b. 1981) |
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| aleksi räihä Finnish footballer, FI (b. 1986) |
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| tomi räihä |
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Aki, Lars, Jani, Jari, Joni, Juha, Juho, Juke, Tomi, Tero, Tina, Timo, Niko, Nina, Elli, Emma, Emmi, Eeva, Hugo, Vesa, Ismo, Otto, Riku, Pasi, Kata, Kati, Kim, Pia, Tom, Tim, Tia, Esa, Ira, Mari, Meri, Mira, Maria, Misa, Sari, Sami, Satu, Anna, Anne, Anni, Arto, Atte, Carl, Kari, Mika, and Marko