Leopoldine "Leonie" Rysanek (November 14, 1926 – March 7, 1998) was an Austrian dramatic soprano. Rysanek was born in Vienna and made her operatic debut in 1949 in Innsbruck. In 1951 the Bayreuth Festival reopened and the new leader Wieland Wagner asked her to sing Sieglinde. He was convinced that her unique, young and beautiful voice, combined with her rare acting abilities, would create a sensation. She became a star overnight, and the role of Sieglinde followed her for the rest of her career.