Cognomen Posio (Posio 
) , across the world, is a rare surname. The family name Posio is habitual in Finland, where it is quite a rare surname, Sweden, where it is a rare surname, and Philippines. Not in comparison with a country's population, it most frequently occurs in Finland, Philippines, and Italy. Very seldom, Posio is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Posio | Italy, Poland, Philippines, Japan, Finland |
| antonio posio 1528-1580; Francescano nato a Montalcino nel 1528 e morto nel 1580. (b. 1528) |
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yasmine posio Swedish politician, SE (b. 1974) |
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| celso posio Italian association football player (1931-2016), IT (b. 1931) |
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| katja posio FI |
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| carlo posio |
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Mr, Juha, Juho, Tori, Tomi, Toni, Tero, Troy, Timo, Niko, Eija, Veli, Iiro, Maria, Mario, Marta, Marko, Marjo, Marja, Matti, Merja, Minna, Jean, Joni, John, Jake, Ms, Pia, Tim, Esa, Mari, Mika, Sari, Sami, Satu, Sumu, Mikko, Anna, Cody, Kati, Kent, Ruth, Gary, Gina, Lari, Lina, Jani, Jari, Aada, and Miika