Miss Brasil 1977 was the twenty-fourth edition of the Miss Brasil pageant, held on 18 June 1977 at the Ginásio Presidente Médici in Brasília. Miss Brasil 1976 Kátia Celestino Moretto crowned Cássia Janys Moraes Silveira of São Paulo as the winner. The winner represented Brazil at Miss Universe 1977; the runner-up went to Miss World 1977; and the third-place finisher to Miss International 1977. The pageant was broadcast by Rede Tupi.