Family name Osã (Osã) , throughout the world, is an extremely rare last name.
Es, Soares, Aguiar, Duarte, Junior, Farias, Martins, Marques, Santana, Almeida, Santos, Andrade, Batista, Pereira, Ribeiro, Freitas, Carvalho, Ferreira, Oliveira, Rodrigues, Francisco, Cardoso, Fernandes, Moraes, Viana, Melo, Reis, Dias, Lima, Nery, Neto, Moura, Silva, Sousa, Filho, Souza, Costa, Bento, Brito, Paula, Ramos, Rocha, Gomes, Lopes, Nunes, Alves, and Nascimento