Don Sanche, ou Le château de l'amour, S.1, is an opera in one act composed in 1824–25 by Franz Liszt in his early teen years, with French libretto by Théaulon and de Rancé, based on a story by Jean-Pierre Claris de Florian. For 30 years it was believed to be lost until it was rediscovered in 1903. The first modern performance took place in 1977, 74 years after its rediscovery.

Franz Liszt was a Hungarian composer, virtuoso pianist, conductor and teacher of the Romantic period. With a diverse body of work spanning more than six decades, he is considered to be one of the most prolific and influential composers of his era, and his piano works continue to be widely performed and recorded.