Cognomen Kainã (Kainã 
) , in the entire world, is an extremely rare last name. The surname Kainã is characteristic of Latin America and the Caribbean, particularly Brazil, where it is an extremely rare surname. More frequently, Kainã is the forename as well as the last name.
Kaio, Antunes, Capoano, Barbosa, Baraldi, Pereira, Ribeiro, Gabriel, Lacerda, Nespoli, Eduardo, Freitas, Silveira, Carvalho, Bermudes, Teixeira, Nogueira, Facchini, Ferreira, Oliveira, Rodrigues, Negreiros, Messias, Moreira, Machado, Marques, Gois, Lima, Silva, Souza, Alves, Ayres, Costa, Cesar, Diniz, Lopes, Dos Santos, Nunes, Faria, Moraes, Mendes, Santos, Soares, Araujo, Aquino, Kadwel, Dantas, Martins, Vidal, and Constantino