In the world, Leonildo (Leonildo 
) is a common masculine forename. The first name Leonildo is habitual in Cabo Verde, where it is quite a common masculine name, Brazil, where it is quite a rare boy's name, and Angola. In absolute terms, the name is most common in Brazil, Italy, and Angola. Very seldom, Leonildo is the last name as well as the forename.
| VARIANT | COUNTRY |
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| Leonildo | Italy, Angola, Argentina, Brazil, Mozambique |
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leonildo de mendonça e costa Portuguese journalist, PT (b. 1849) |
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leonildo tarozzi Italian politician, IT (b. 1895) |
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| leonildo marcheselli Italian musician (1912-2005), IT (b. 1912) |
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| leonildo da silva person identified in the Museu da Pessoa collection, BR (b. 1944) |
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| leonildo silveira campos (b. 1947) |
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| leonildo aparecido juliao Brazilian politician, BR (b. 1960) |
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| leonildo pessoa de azevedo person identified in the Museu da Pessoa collection, BR (b. 1966) |
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| leonildo cunha de souza leader of a Candomblé temple |
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| leonildo borim Person identified in the Museu da Pessoa collection (207067), BR |
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| leonildo ramos sierra ES |
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Melo, Junior, Vieira, Martins, Machado, Moreira, Santana, Almeida, Andrade, Cardoso, Camargo, Barbosa, Batista, Pereira, Ribeiro, Freitas, Carvalho, Ferreira, Oliveira, Conceicao, Rodrigues, Goncalves, Barros, Castro, Araujo, Soares, Cruz, Rosa, Reis, Dias, Lima, Neto, Moura, Silva, Sousa, Souza, Fernandes, Alves, Brito, Ramos, Rocha, Gomes, Lopes, Jesus, Nunes, Filho, Moraes, Santos, Costa, and Nascimento