Erich Wolfgang Korngold (May 29, 1897 – November 29, 1957) was an Academy Award-winning 20th century film and romantic music composer. While his compositional style was considered well out of vogue at the time he died, his music has more recently undergone a reevaluation and a gradual reawakening of interest.

Born in a Jewish home in Brünn (Brno), (Czech Republic), Erich was the second son of eminent music critic Julius Korngold. A child prodigy, Erich played his cantata Gold to Gustav Mahler in 1906; Mahler called him a "musical genius" and recommended study with composer Alexander von Zemlinsky. Richard Strauss also spoke very highly of the youth. At the age of 11 he composed his ballet Der Schneemann (The Snowman), which became a sensation when performed at the Vienna Court Opera in 1910, including a command performance for Emperor Franz Josef. This work was followed first with a piano trio, then his Piano Sonata No. 2 in E major that Artur Schnabel played throughout Europe. During his early years Korngold also made live-recording player piano music rolls for the Aeolian Duo-Art system, all of which survive today and can be heard.

Korngold wrote his first orchestral score, the Schauspiel Ouverture when he was 14. His Sinfonietta appeared the following year, and his first two operas, Der Ring des Polykrates and Violanta, in 1914. He completed his opera Die tote Stadt, which became an international success, in 1920 at the age of 23. At this point Korngold had reached the zenith of his fame as a composer of opera and concert music. Composers such as Richard Strauss and Giacomo Puccini heaped praise on him, and many famous conductors, soloists and singers added his works to their repertoires. He completed a concerto for piano left hand for pianist Paul Wittgenstein in 1923 and his fourth opera, Das Wunder der Heliane four years later. He also started arranging and conducting operettas by Johann Strauss II and others while teaching opera and composition at the Vienna Staatsakademie. Korngold was awarded the title professor honoris causa by the president of Austria.