Frieda Hempel (26 June 1885 – 7 October 1955) was a German lyric coloratura soprano singer in operatic and concert work who had an international career in Europe and the United States.

She made a debut there in 1905 as Frau Fluth (in Nicolai's The Merry Wives of Windsor) and also sang at the Bayreuth Festival that year.

"[4] She appeared at the Covent Garden, London in 1907 as Bastienne, in Humperdinck's Hansel and Gretel, as Eva and Elsa and again as Frau Fluth: Nellie Melba and Selma Kurz were taking centre stage in the more popular roles.

Hempel had a very wide dramatic range, from Rosina or Queen of the Night to Wagner's Eva and Weber's Euryanthe (Metropolitan, 1914 revival).

After 1919 she devoted herself to concert recitals, and left the Metropolitan Opera House somewhat abruptly, making way for the career of Amelita Galli-Curci.

In 1918, Hempel married the silk merchant and political writer William B. Kahn, taking their honeymoon at the Lake Placid Club.