Orpheus in the Underworld and Orpheus in Hell are English names for Orphée aux enfers, a comic opera with music by Jacques Offenbach and words by Hector Crémieux and Ludovic Halévy. It was first performed as a two-act "opéra bouffon" at the Théâtre des Bouffes-Parisiens, Paris, on 21 October 1858, and was extensively revised and expanded in a four-act "opéra féerie" version, presented at the Théâtre de la Gaîté, Paris, on 7 February 1874.

Jacques Offenbach 20 June 1819 – 5 October 1880) was a German-born French composer, cellist and impresario. He is remembered for his nearly 100 operettas of the 1850s to the 1870s, and his uncompleted opera The Tales of Hoffmann. He was a powerful influence on later composers of the operetta genre, particularly Franz von Suppé, Johann Strauss Jr. and Arthur Sullivan. His best-known works were continually revived during the 20th century, and many of his operettas continue to be staged in the 21st. The Tales of Hoffmann remains part of the standard opera repertory.