Globally, Paio (Payo 
, Paio , Пайо 
) is quite a rare epicene first name. The given name Paio is characteristic of Pakistan, where it is a rare predominantly boy's, but very infrequently female name, Guatemala, where it is a rare masculine name, and Bulgaria. Measured by absolute frequency, it is commonest in India, Pakistan, and Indonesia. Likewise, Paio is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Payo, Paio | India, Spain, Pakistan, Philippines, Brazil |
| Пайо | Ukraine, Kazakhstan, Russia, Belarus, Bulgaria |
| Пай | Uzbekistan, Ukraine, Kazakhstan, Russia, Belarus |
Paio is also a name for the fictitious and mythical characters: .
| paio godins de azevedo (b. 1050) |
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| paio guterres da cunha (b. 1067) |
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| paio guterres da silva (b. 1070) |
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| paio ramires (b. 1090) |
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| paio pires de guimarães Portuguese politician, PT (b. 1100) |
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paio galvão Catholic cardinal, PT (b. 1165) |
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| paio ramiro (b. 1125) |
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paio soares de taveirós Galician poet (b. 1200) |
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paio de coímbra PT (b. 1195) |
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paio peres correia Portuguese noble, PT (b. 1205) |
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| paio soares de valadares (b. 1160) |
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| paio soares correia (b. 1175) |
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| paio viegas (b. 1190) |
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| paio soares de azevedo Portuguese diplomat, PT (b. 1210) |
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| paio anes marinho (b. 1210) |
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