Worldwide, Pio (Pius 
, Pio 
, Пио 
) is a widespread principally boy's, but scarcely girly first name. The given name Pio is characteristic of San Marino, where it is quite a common male name, Tanzania, and Nigeria, where it is quite a common mostly masculine, but infrequently girly name (explore the name in all countries). Not in comparison with a country's population, it is the most numerous in Nigeria, Tanzania, and Philippines. Also, Pio is the last name as well as the forename.
| VARIANT | COUNTRY |
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| Pius | Philippines, Tanzania, Brazil, Nigeria, Kenya |
| Pio | Philippines, Tanzania, Brazil, Italy, Nigeria |
| Пио | Kyrgyzstan, Russia |
| Піо | Ukraine |
Pio is also a name for the fictitious and mythical characters: Pius Thicknesse , character in Harry Potter and the Deathly Hallows – Part 2.
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pio enea i obizzi IT (b. 1525) |
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| pio antonio bartolini (b. 1511) |
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| pio muzio (1574-1659) (b. 1574) |
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| pio torelli IT (b. 1578) |
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| pio rossi (b. 1581) |
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| pio enea ii obizzi Italian librettist, IT (b. 1592) |
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| pio la croce Italian clergyman and writer (b. 1600) |
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| pio cassetta IT (b. 1596) |
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| pio fabio paolini Italian painter (1620-1692), IT (b. 1620) |
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| pio nicola garelli Italian physician and librarian (1675-1739), IT (b. 1670) |
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pio fantoni (1721-1804), IT (b. 1721) |
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| pio magnoni Roman Catholic bishop (1682-1755) (b. 1682) |
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| pio tommaso milante Roman Catholic bishop (b. 1689) |
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| pio gallizia Roman Catholic bishop (b. 1701) |
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| pio angelo bellingeri Roman Catholic bishop (b. 1703) |
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