Family name Roivainen (Roivainen 
) , worldwide, is a rare cognomen. The surname Roivainen is habitual in Northern Europe, particularly Finland, where it is quite a common surname, Estonia, where it is quite a rare surname, and Sweden, where it is a rare surname.
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| Roivainen | Austria, Canada, Estonia, Finland, Sweden |
| heikki roivainen botanist (1900-1983), FI (b. 1900) |
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teemu roivainen Finnish ballet dancer and singer, FI (b. 1986) |
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| raija roivainen Finnish singer, FI (b. 1938) |
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| irene roivainen Finnish politician, FI (b. 1955) |
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| anne roivainen researcher |
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| eka roivainen researcher (ORCID 0000-0001-9190-0175) |
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| päivi roivainen researcher (ORCID 0000-0003-1793-1680) |
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| päivi roivainen Finnish cross country skier, FI (b. 1989) |
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| hannu roivainen FI |
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| aira roivainen FI |
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| sirkka roivainen FI |
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| jouko roivainen FI |
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| matti roivainen FI |
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Mr, Tiia, Neea, Essi, Esko, Erik, Erja, Emmi, Eero, Eetu, Heli, Vesa, Ilpo, Ossi, Outi, Maria, Marko, Marja, Matti, Maija, Mauri, Meeri, Timo, Mirek, Tero, Toni, Ms, Ari, Aki, Pã, Mika, Miia, Sari, Anne, Arja, Aira, Aimo, Aila, Aatu, Rami, Rosa, Riku, Jani, Jari, Jere, Juha, Juho, Topi, and Minna