Family name Paio (Payo 
, Paio , Пайо 
) , globally, is quite a common last name. The surname Paio is characteristic of Estonia, where it is quite a rare surname, Latvia, and Philippines. Not in comparison with a country's population, it is the most numerous in Philippines, Spain, and Russia. Likewise, Paio is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Paio, Payo | Philippines, Brazil, Spain, India, Pakistan |
| Пайо | Bulgaria, Kazakhstan, Belarus, Russia, Ukraine |
| Пай | Kazakhstan, Belarus, Uzbekistan, Russia, Ukraine |
| alcides paio Brazilian politician, BR (b. 1935) |
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| júlio são paio Brazilian musician, BR (b. 1954) |
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| maria vaz de sao paio |
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| vasco pires de sao paio |
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