Florence Quivar (born March 3, 1944 in Philadelphia, Pennsylvania) is an American operatic mezzo-soprano who is considered to be "one of the most prominent singers of her generation." She has variously been described as having a "rich, earthy sound and communicative presence" as "always reliable" and as "a distinguished singer, with a warm, rich voice and a dignified performing presence." From 1977-1997 she was a regular performer at the Metropolitan Opera where she gave more than 100 performances.