This is an inclusive list of opera festivals and summer seasons, and music festivals that have opera productions.
| Name of Opera festival | Principal theatre | Location
|
| Arena di Verona Festival | Arena di Verona | Verona
|
| Aspen Music Festival | Wheeler Opera House | Aspen, Colorado
|
| Festspiel Baden-Baden | Festspielhaus Baden-Baden | Baden-Baden
|
| Bayreuth Festival | Bayreuth Festspielhaus | Bayreuth
|
| Bregenz Festival | Seebühne | Bregenz
|
| Buxton Festival | Buxton Opera House | Buxton, England
|
| Caramoor International Music Festival | Venetian Theatre | Katonah, New York
|
| Central City Opera | Opera House | Central City, Colorado
|
| Chautauqua Opera | Norton Memorial Hall | Chautauqua, New York
|
| Chorégies d'Orange | Théâtre Antique d'Orange | Orange, France
|
| Dalhalla Opera | Draggängarna | Dalhalla, Sweden
|
| Drottningholm | Drottningholm Slottstheater | Stockholm
|
| Edinburgh International Festival | Edinburgh Festival Theatre | Edinburgh
|
| Festival de Radio France et Montpellier | | Montpellier
|
| Festival dei Due Mondi | Teatro Caio Melisso | Spoleto, Italy
|
| Festival della Valle d'Itria | Palazzo Ducale | Martina Franca
|
| Festival international d'Art Lyrique | Théâtre de l'Archevêché | Aix-en-Provence
|
| Festival Puccini | | Torre del Lago
|
| Garsington Opera | Garsington Manor | Garsington, England
|
| Glimmerglass Opera | Alice Busch Opera Theater | Cooperstown, New York
|
| Glyndebourne Festival Opera | Glyndebourne Opera House | Glyndebourne
|
| International Gilbert and Sullivan Festival | Buxton Opera House | Buxton, England
|
| Macerata Opera | Sferisterio | Macerata
|
| Maggio Musicale Fiorentino | Teatro Comunale di Firenze | Florence
|
Munich Opera Festival
(Münchner Opern-Festspiele) | Nationaltheater München | Munich
|
| Operabarga Festival | | Barga Italy
|
| Opera Holland Park | | London
|
| Opéra Les Azuriales | Villa Ephrussi de Rothschild | Cap Ferrat, France
|
| Opera Theatre of Saint Louis | Loretto-Hilton Theater | St. Louis, Missouri
|
| Ravenna Festival | Teatro Communale Alighieri | Ravenna
|
| Ravinia Festival | | Highland Park, Illinois
|
| Rossini Opera Festival | Teatro Rossini | Pesaro
|
| Salzburger Osterfestspiele (Salzburg Easter Festival) | Großes Festspielhaus | Salzburg
|
| Salzburg Summer Festival | Großes Festspielhaus | Salzburg
|
| Salzburg Mozarteum | | Salzburg
|
Salzburger Pfingstfestspiele
(Salzburg Whitsun Festival) | Großes Festspielhaus | Salzburg
|
| Santa Fe Opera | The Crosby Theater | Santa Fe, New Mexico
|
| Savonlinna Opera Festival | Olavinlinna Castle | Savonlinna
|
| Schwetzingen Festival | | Schwetzingen
|
| Spoleto Festival USA | Gaillard Municipal Auditorium & Memminger Auditorium | Charlotte, North Carolina
|
| Tanglewood Music Festival | Tanglewood Music Center | Lenox, Massachusetts
|
| Wexford Festival Opera | Theatre Royal | Wexford, Ireland
|
| Wolf Trap Opera Company | Filene Center | Vienna, Virginia
|
Sources
Operabase list of 2006 opera festivals
Opera festivals | Opera-related lists
"List of opera festivals".