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Worldwide, Janaina (Janaina , Janaína ) is a widespread female first name. The first name Janaina is habitual in Brazil, where it is quite a common girly name, Portugal, where it is quite a rare predominantly girly, but very seldom male name, and Uruguay, where it is quite a rare feminine name. Not in comparison with a country's population, this name is the most popular in Brazil, the United States, and Angola.
Melo, Vieira, Martins, Marques, Machado, Moreira, Santana, Almeida, Andrade, Cardoso, Barbosa, Batista, Pereira, Ribeiro, Freitas, Carvalho, Teixeira, Ferreira, Oliveira, Conceicao, Rodrigues, Goncalves, Barros, Campos, Araujo, Soares, Cruz, Rosa, Reis, Dias, Lima, Moura, Silva, Sousa, Souza, Alves, Fernandes, Costa, Brito, Ramos, Rocha, Gomes, Lopes, Jesus, Nunes, Moraes, Mendes, Santos, Cunha, and Nascimento