Tarquinia Molza (1 November 1542 – 8 August 1617) wa s an Italian singer, poet, conductor, composer, and natural philosopher. She was considered a great virtuosa. She was involved with the famous Concerto delle donne, although whether she sang with them or coached them is not clear. She also played the viola bastarda, viola da mano, clavier, and lute. Trained in both distinctly male and female singing styles, her contributions helped combine them into the madrigal of the late Renaissance.