Across the world, Thainna (Thainna 
) is a rare female first name. The given name Thainna is habitual in Latin America and the Caribbean, particularly Brazil, where it is a rare girly name.
Braz, Freire, Martins, Marques, Machado, Santana, Alencar, Almeida, Andrade, Barbosa, Pereira, Ribeiro, Siqueira, Carneiro, Coutinho, Pinheiro, Teixeira, Ferreira, Oliveira, Rodrigues, Goncalves, Fernandes, Vieira, Ghiggi, Garcia, Araujo, Paes, Reis, Dias, Lima, Moura, Silva, Sousa, Souza, Alves, Costa, Cavalcante, Brito, Pinto, Pires, Rocha, Gomes, Lopes, Jesus, Nunes, Mendes, Santos, Simoes, Porto, and Nascimento