Cognomen Dejanira (Dejanira 
) , in all the world, is a rare family name. The cognomen Dejanira is characteristic of Mexico, where it is a rare surname, Nicaragua, where it is a very rare surname, and Spain. Not in comparison with a country's population, it most frequently occurs in Mexico, Spain, and Brazil. Much more prevalently, Dejanira is the forename as well as the last name.
Melo, Martins, Marques, Machado, Moreira, Santana, Almeida, Andrade, Cardoso, Barbosa, Batista, Pereira, Ribeiro, Freitas, Silveira, Carvalho, Teixeira, Ferreira, Oliveira, Conceicao, Rodrigues, Goncalves, Vieira, Borges, Campos, Araujo, Cruz, Rosa, Reis, Dias, Lima, Silva, Sousa, Souza, Alves, Costa, Fernandes, Brito, Ramos, Rocha, Gomes, Lopes, Jesus, Nunes, Moraes, Mendes, Santos, Soares, Paula, and Nascimento