Florence Kirk (1909 – June 6, 1999) was an American dramatic soprano who had an active international performance career in operas and concerts from 1937 to 1954. Born in Philadelphia and trained at the Curtis Institute of Music by Elisabeth Schumann, she was particularly associated with the roles of Donna Anna in Mozart's Don Giovanni and the title heroine in Verdi's Aida. Her repertoire included other Verdi heroines like Leonora and Lady Macbeth, Santuzza from Mascagni's Cavalleria rusticana, Minnie in Puccini's La fanciulla del West and the title role in Tosca, and several roles from Richard Wagner's Ring Cycle.