Alma Manon Gropius (5 October 1916 – 22 April 1935) was the daughter of the architect Walter Gropius and the composer and diarist Alma Mahler and the stepdaughter of the novelist and poet Franz Werfel. She is a Randfigur (peripheral person) whose importance lies in her key relationships to major figures: a muse who inspired the composer Alban Berg as well as Werfel and the Nobel Prize-winning writer Elias Canetti. Manon Gropius is most often cited as the "angel" and dedicatee of Berg's Violin Concerto (1935).