Surname Ojanperä (Ojanperä 
, Оянперя 
) , around the world, is a rare cognomen. The surname Ojanperä is habitual in Finland, where it is quite a rare surname, Sweden, where it is a rare surname, and Indonesia, where it is a very rare surname.
| VARIANT | COUNTRY |
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| Ojanperä | Sweden, Finland, Indonesia |
| Оянперя | Russia |
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abraham ojanperä Finnish singer and opera singer, FI (b. 1856) |
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olavi ojanperä Canoe racer, FI (b. 1921) |
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| toini ojanperä Finnish writer, FI (b. 1899) |
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| heli ojanperä Finnish painter, FI (b. 1921) |
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tuomo ojanperä FI (b. 1963) |
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antti ojanperä Finnish harness racehorse trainer, FI (b. 1980) |
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antti ojanperä Finnish footballer, FI (b. 1983) |
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| risto ojanperä Finnish pesäpallo player, FI (b. 1965) |
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| tero ojanperä FI (b. 1966) |
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| ilkka ojanperä researcher |
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| juha ojanperä Finnish association football player and futsal player, FI (b. 1981) |
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| taru ojanperä FI |
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| terho ojanperä FI |
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| harri ojanperä FI |
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| kaija ojanperä FI |
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Ari, Niko, Ella, Essi, Esko, Erno, Erja, Emma, Eija, Eero, Eetu, Heli, Vesa, Olli, Ossi, Maria, Marko, Marjo, Marja, Matti, Maija, Milla, Timo, Tero, Jimi, Juho, Pia, Esa, Ira, Sara, Sami, Sini, Suvi, Anna, Anne, Anni, Minna, Asko, Pasi, Piia, Rami, Riku, Jani, Jari, Jalo, John, Joni, Juha, Kari, and Mikko