Die Walküre, WWV 86B, is the second of the four epic music dramas that constitute Richard Wagner's Der Ring des Nibelungen. It was performed, as a single opera, at the National Theatre Munich on 26 June 1870, and received its first performance as part of the Ring cycle at the Bayreuth Festspielhaus on 14 August 1876.

Wilhelm Richard Wagner was a German composer, theatre director, polemicist, and conductor who is chiefly known for his operas. Unlike most opera composers, Wagner wrote both the libretto and the music for each of his stage works. Initially establishing his reputation as a composer of works in the romantic vein of Carl Maria von Weber and Giacomo Meyerbeer, Wagner revolutionised opera through his concept of the Gesamtkunstwerk, by which he sought to synthesise the poetic, visual, musical and dramatic arts, with music subsidiary to drama. He described this vision in a series of essays published between 1849 and 1852. Wagner realised these ideas most fully in the first half of the four-opera cycle Der Ring des Nibelungen.