Family name Billio (Billio 
) , around the world, is a rare last name. The surname Billio is habitual in Italy, where it is a rare surname, Philippines, where it is a very rare surname, and South Africa. Measured by absolute frequency, it most frequently occurs in Italy, Philippines, and Brazil. Very seldom, Billio is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Billio | Myanmar, South Africa, Philippines, Italy, Brazil |
| patrizio billio Italian footballer, IT (b. 1974) |
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| monica billio Economist (University Ca' Foscari Venice -> Department of Economics) |
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