Hermann Weigert (20 October 1890 in Breslau – 2 April 1955 in New York City) was a German vocal coach, pianist, and conductor.
He was a vocal coach and accompanist for the Metropolitan Opera for thirteen years.
Recognized as an authority on the works of Richard Wagner, he served as a consultant to the Bayreuth Festival from 1951 until his death four years later.
He was the husband, accompanist and, voice teacher of Swedish soprano Astrid Varnay, whose career he managed to international success.
He also served as accompanist and vocal coach for soprano Kirsten Flagstad for many years.