Margaret Dumont (20 Oktober 1882 – 6 Maart 1965) was 'n Amerikaanse aktrise. Sy was bekend vir haar rolle in die rolprente Animal Crackers (1930), Duck Soup (1933), A Night at the Opera (1935), en A Day at the Races (1937). 1930: Animal Crackers 1931: The Girl Habit 1933: Duck Soup 1935: A Night at the Opera 1937: A Day at the Races 1937: Youth on Parole 1942: Rhythm Parade 1962: Buster Keaton in Wildwest 1999: Hidden Hollywood II: More Treasures from the 20th Century Fox Vaults 1979: The Hollywood Clowns Margaret Dumont in die Internet-rolprentdatabasis