Opéra de Lausanne, Opera house in Lausanne, Switzerland.

Opéra de Lausanne is an opera house in Lausanne, Switzerland, opened on 10 May 1871. It closed in 2007 for renovations that lasted until 2012, when it reopened with an updated building and an extended stage. Its programme ranges from baroque opera to contemporary creation, alongside concerts and ballets, and it draws more than 45,000 spectators a year.

Opera reached Lausanne in 1755, when the city council let the Neapolitan impresario Michele Carulli give fifteen performances. After a theatre holding 1,100 people opened in 1804 in the faubourg de Martheray, a public subscription raised 300,000 francs for a new Casino-Théâtre at Pré-Georgette, which opened on 10 May 1871. The house closed for renovation in 2007 and reopened in 2012 with an extended stage.

The name comes from the Casino-Théâtre built on the Pré-Georgette, funded by a public subscription that raised 300,000 francs. Since the 2012 stage renovation the house has produced its own shows, staging operas from baroque to contemporary works alongside concerts and ballets, and draws over 45,000 spectators a season.

The opera house stands at the Pré-Georgette, the site chosen for the Casino-Théâtre after long debate over alternatives such as Montbenon and the Grenette; some Lausannois already found it too far from the centre. The building closed in 2007 and reopened in 2012 after renovation and extension of its stage.

The first documented opera in Lausanne dates from 1755, when the city council let the Neapolitan impresario Michele Carulli give fifteen performances, offering him a choice between the Maison du Tirage, the former bishop's palace and the town hall. In 1772 the troupe of Gallier de Saint-Gérand gave thirty-six performances in a single season.