Family name Pio (Pius 
, Pio 
, Пио 
) , worldwide, is a widespread last name. The last name Pio is habitual in Sub-Saharan Africa, particularly Tanzania, where it is quite a common surname, Nigeria, and Cabo Verde (explore the name in all countries). Measured by absolute frequency, it is the most numerous in Nigeria, Tanzania, and Brazil. Likewise, Pio is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Pius | Nigeria, Philippines, Brazil, Kenya, Tanzania |
| Pio | Nigeria, Italy, Philippines, Brazil, Tanzania |
| Пио | Russia, Kyrgyzstan |
| Піо | Ukraine |
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rodolfo pio Catholic cardinal, IT (b. 1500) |
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| giambattista pio Italian poet and philologist, IT (b. 1460) |
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| lionello ii pio IT (b. 1477) |
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| francesco pio (b. 1590) |
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angelo gabriello pio Italian sculptor (1690-1770), IT (b. 1690) |
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| nicola pio (b Rome, 1677; d Rome, after 1733). Italian collector and writer, IT (b. 1677) |
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| antonio pio Italian composer (b. 1753) |
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louis pio Danish politician (1841-1894), DK (b. 1841) |
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william pio actor (b. 1850) |
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| antonio pio Italian painter (1809-1871) (b. 1809) |
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| hamiora tumutara te tihi-o-te-whenua pio Ngati Awa and Ngati Tuwharetoa tohunga, historian, NZ (b. 1814) |
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| oscar pio Italian historian, poet, novelist, dramatist and lawyer (1836-1905), IT (b. 1836) |
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| jean pio (b. 1833) |
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| frederikke pio DK (b. 1837) |
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| albert pio architect from Italy, worked in Vienna (b. 1847) |
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