Valentina Bartolomasi (1889–1932) was an Italian soprano whose opera career spanned from 1910 to 1927. She appeared on the recordings made of Umberto Giordano's Andrea Chénier (as Maddalena de Coigny), Giacomo Puccini's Tosca (in the title role), and Giuseppe Verdi's Aida (in the title role). Bartolomasi's career ended prematurely due to illness in 1927. She spent the last several years of her life fighting endometrial cancer from which she eventually died in 1932 in Milan. Bartolomasi was the aunt of soprano Mirella Freni.