Mary Adelaide Gescheidt (February 16, 1877 – September 18, 1946) was an American voice teacher, writer, and clubwoman, based in New York City.

[5] In 1907-1908 she was the paid resident soprano soloist at Willis Avenue Methodist Episcopal Church in the Bronx.

[9][10] Her specialty, advertised as "Miller Vocal Art-Science",[11][12] involved training and rehabilitating speaking and singing voices damaged by injury, illness, or other defects,[13] in collaboration with throat specialist Frank E.

[1] She wrote about her work in a pamphlet[14] that later became a book, Make Singing a Joy (1930, with a foreword by musicologist Sigmund Spaeth).

[8] She emphasized that singing naturally, without excessive training or force, produces a pleasing sound and preserves the voice from strain.