The Teatro Valle (literally Valley Theater) is a theatre and former opera house in Rome, Italy. Commissioned by the Capranica family, the architect Tommaso Morelli designed the theatre which was built in 1726. It was inaugurated with the staging of the tragedy Matilde by Simon Falconio Pratoli. After hosting a season of opera seria in 1730, the Valle was limited through much of the latter half of the 18th century to staging prose dramas as well as a mix of intermezzos and comic operas, particularly those of Galuppi, Piccinni, Anfossi, Sacchini, Paisiello, Guglielmi, and Cimarosa. It was the only theatre in Rome in 1782, and after 1786, which offered both spring and autumn seasons of opera as well a season during Carnival.
Throughout the early 19th century, the Valle was regularly staging opera buffa and opera semiseria as well as prose comedies and, increasingly after 1830, serious melodramas. A number of operas during this time were premiered at the Valle, including Rossini’s Demetrio e Polibio (1812), Torvaldo e Dorliska (1815), and La Cenerentola (1817); Mercadante’s Il geloso ravveduto (1820); Donizetti’s L'ajo nell'imbarazzo (1824), Olivo e Pasquale (1827), Il furioso all’isola di San Domingo (1833), and Torquato Tasso (1833); Pacini’s La gioventù di Enrico V (1820); and Luigi Ricci’s L’orfana di Ginevra (1829), Il sonnambulo (1829), and Chi dura vince (1834), as well as many lesser known works from local composers.