The Grand Théâtre de Québec is an arts complex in Quebec City, Canada. It was conceived to commemorate the Canadian Centennial of 1967 and the Quebec Conference, 1864, one of the key meetings leading to the Canadian Confederation of 1867. Designed by Polish-Canadian architect Victor Prus , construction began in 1966 under Premier Jean Lesage but was stopped by the Union Nationale government of Daniel Johnson. Construction resumed in late 1967 but the theatre was not officially opened until January 16, 1971. The theatre has two venues, Salle Louis Fréchette (1875 seats) for the large hall, and Salle Octave Crémazie (506 seats) for the small hall. The Conservatoire de musique de Québec forms part of the theatre complex.

The theatre was used for the 1985 Shamrock Summit when Prime Minister Brian Mulroney entertained U.S. President Ronald Reagan

Organizations which use the theatre include the Orchestre symphonique de Québec , the Théâtre du Trident , and the Opéra de Québec .