Martim Mércio da Silveira (2 March 1911 - 26 May 1972), in Argentina better known as Martín Mercío Silveyra, was a Brazilian football player.

[1] He commenced his career in 1929 with Guarany FC of Bagé in the state of Rio Grande do Sul.

From February to December 1933 he played for CA Boca Juniors in the Argentine capital Buenos Aires, where he was the first Brazilian in the club's history.

After this he returned to Botafogo winning 1934 and 1935 two more city Championships, albeit in the amateur orientated league in the then divided football of Rio.

This biographical article related to a Brazilian association football midfielder born in the 1910s is a stub.