Last name Olaio (Olaio 
) , across the world, is a rare cognomen. The last name Olaio is characteristic of Portugal, where it is quite a rare surname, France, where it is a very rare surname, and Brazil. Very seldom, Olaio is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Olaio | Portugal, China, Spain, France, Brazil |
| pedro olaio Portuguese painter (1930-2017), PT (b. 1930) |
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| amélia almeida ribeiro olaio Brazilian botanist, BR (b. 1957) |
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Mr, Leisa, Lidia, Jorge, Joana, João, Julio, Telmo, Tiago, Nella, Edson, Hilma, Frank, Marcos, Marcio, Manuel, Manoel, Mateus, Milton, Miguel, Sergio, Andrea, Laide, David, Dario, Pedro, Ms, Ana, Sara, Alan, Caio, Rita, Luis, Luiz, Jose, Joao, André, Joã, Vera, Ines, Maria, Mario, Marco, Marly, Sofia, Aline, Aurea, Paula, Nuno, and Andrã