Globally, Onaldo (Onaldo 
) is quite a rare boy's first name. The first name Onaldo is characteristic of Latin America and the Caribbean, particularly the Dominican Republic, where it is a rare masculine name, Nicaragua, and Brazil. Not in comparison with a country's population, this name is the most popular in Latin America and the Caribbean, particularly Brazil, the Dominican Republic, and Colombia. Very seldom, Onaldo is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Onaldo | Colombia, Dominican Republic, Venezuela, Nicaragua, Brazil |
| onaldo brancante machado Brazilian politician, BR (b. 1893) |
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| onaldo segundo pereira de queiróz person identified in the Museu da Pessoa collection, BR (b. 1969) |
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| onaldo segundo pereira de queiroz person identified in the Museu da Pessoa collection, BR (b. 1978) |
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Sa, Junior, Vieira, Falcao, Martins, Machado, Miranda, Santana, Almeida, Cardoso, Barbosa, Pereira, Ribeiro, Freitas, Queiroz, Medeiros, Carvalho, Teixeira, Ferreira, Oliveira, Rodrigues, Cavalcante, Dantas, Araujo, Soares, Santos, Melo, Cruz, Dias, Lima, Neto, Silva, Sousa, Souza, Alves, Anjos, Nascimento, Costa, Ramos, Rocha, Gomes, Leite, Jesus, Nunes, Filho, Morais, Moraes, Mendes, Brito, and Figueiredo