Last name Onnela (Onnela 
) , globally, is a rare family name. The surname Onnela is habitual in Northern Europe, particularly Finland, where it is quite a common surname, Sweden, where it is a rare surname, and Denmark.
| VARIANT | COUNTRY |
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| Onnela | Denmark, Finland, Norway, Sweden, United States |
| greta onnela Finnish diver, FI (b. 1910) |
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jukka-pekka onnela Finnish academic, FI |
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| markus onnela Finnish politician, FI (b. 1936) |
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| samuli onnela Finnish historian, FI (b. 1938) |
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| jukka-pekka onnela researcher |
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| antti onnela researcher |
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| anne onnela FI |
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| toivo onnela FI |
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Mr, Heli, Olli, Ulla, Maria, Marko, Marjo, Matti, Milja, Minna, Sirpa, Seija, Anton, Chris, Brian, Kalle, Kevin, Kirsi, Paavo, Petra, Petri, Pekka, Eija, Eila, Nona, Nina, Ms, Kai, Mari, Miro, Mika, Sari, Sami, Suvi, Anna, Anne, Raili, Kari, Piia, Gary, Jari, Joni, Jere, Juha, Juho, Tomi, Tero, Timo, Kody, and Reija