Mário da Silveira Meireles Reis (31 December 1907 — 5 October 1981 in Rio de Janeiro), also known as Bacharel do Samba was a popular Brazilian samba singer, active between 1928 and 1971. He collaborated with artists such as Francisco Alves, Carmen Miranda, Aracy de Almeida and Noel Rosa and was particularly successful as a radio singer.