Johanna Martzy (26 October 1924 – 13 August 1979) was a Hungarian violinist.

After that decade her renown in North America, at least, declined and her death from cancer, in Glarus in 1979, was not well noted.

[citation needed] Among her chamber music recordings those of Schubert have been thought particularly special.

[2] She was married to conductor Béla de Csillery during much of her period of renown in the 1940s and 1950s, but the marriage was dissolved in 1959.

[3] She was referred to by Glenn Gould in his essay "We who are about to be disqualified salute you," as "an artist who has always seemed to me to be, at least in North America, the most underrated of the great violinists of our age.