Royal Opera or Royal Opera House may refer to:
Khedivial Opera House, Cairo, Egypt; burnt down in 1971
Royal Swedish Opera, opera house and opera company in Sweden
L'Opéra of the Palace of Versailles or L'Opéra Royal de Versailles, France
Opéra Royal de Wallonie, opera house in Liège, Belgium
Royal Opera House (Mumbai), opera house in India
Royal Opera House Muscat, opera house in Muscat, Oman
Royal Opera House, Valletta, opera house in Malta
Royal Opera House, opera house in Covent Garden, London, home of
The Royal Opera, leading opera company in England
Royal Wanganui Opera House, opera house in New Zealand
Royal Opera House, Scarborough, England (1876-2004)
Formerly "Royal" opera houses or companies
Berlin State Opera, Germany: "Royal Opera House", 1843–1918
Hungarian State Opera House, Budapest: "Hungarian Royal Opera House", 1884–1945?
Kroll Opera House, Berlin, Germany: "New Royal Opera Theatre", 1895–1924
Palace Theatre, London, London: "Royal English Opera House", 1891–92
Teatro dell'Opera di Roma, Italy: "Royal Opera House", 1926–46