Giselle, originally titled Giselle, ou les Wilis, is a romantic ballet in two acts with music by Adolphe Adam. Considered a masterwork in the classical ballet performance canon, it was first performed by the Ballet du Théâtre de l'Académie Royale de Musique at the Salle Le Peletier in Paris on 28 June 1841, with Italian ballerina Carlotta Grisi as Giselle. It was an unqualified triumph. It became hugely popular and was staged at once across Europe, Russia, and the United States.

The Romantic ballet is defined primarily by an era in ballet in which the ideas of Romanticism in art and literature influenced the creation of ballets. The era occurred during the early to mid 19th century primarily at the Théâtre de l'Académie Royale de Musique of the Paris Opera Ballet and Her Majesty's Theatre in London. It is typically considered to have begun with the 1827 début in Paris of the ballerina Marie Taglioni in the ballet La Sylphide, and to have reached its zenith with the premiere of the divertissement Pas de Quatre staged by the Ballet Master Jules Perrot in London in 1845. The Romantic ballet had no immediate end, but rather a slow decline. Arthur Saint-Léon's 1870 ballet Coppélia is considered to be the last work of the Romantic Ballet. Romantic ballet is believed to have been experienced in three main phases: The zenith phase from 1830-1840, the decline phase from 1850-1880, and the revival phase in the 1890s prior to Diaghilev. Each phase is synonymous with the production of a few specifically stylized ballets.