Maria Martha Hacker Rocha (Salvador, Bahia 19 September 1932 – Niterói, Rio de Janeiro, 4 July 2020) was a Brazilian model and beauty pageant titleholder who was the first winner of Miss Brasil 1954 and the 1st runner-up at Miss Universe 1954.

It is said that the final judgment came down to the fact that Miriam's hip measurement was 2 inches (51 mm) smaller than that of Martha.

[citation needed] Martha participated in international horse championships alongside Queen Elizabeth II, and met Prince Charles, among other celebrities.

[citation needed] Her name was given to the famous Martha Rocha aquamarine, found near Teófilo Otoni, Minas Gerais, Brazil.

Martha married Portuguese-Argentinian banker Álvaro Piano and had two sons with him before his death in a plane crash when she was about 23 years old.