Fritzi Massary (March 31, 1882, in Vienna, Austria – January 30, 1969, in Los Angeles, California) was an Austrian-American actress and soprano singer. Born as Friederike Massaryk, she was one of the leading operetta singers in Berlin and Vienna. By 1912 her fame was such that one spoke simply of "die Massary (the Massary)". She was a premier Diva of her generation. She was closely associated with Oscar Straus, creating roles in six of his operettas, notably Der letzte Walzer in 1920.