| Music Mountain Summer Chamber Music Festival Canaan, United States | Canaan, United States | — | chamber music | — | active |
| Santa Fe Chamber Music Festival Santa Fe, United States | Santa Fe, United States | — | chamber music | — | active |
| Naantali Music Festival Naantali, Finland | Naantali, Finland | — | chamber music | — | active |
| Kuhmo Chamber Music Festival Kuhmo, Finland | Kuhmo, Finland | — | chamber music | — | active |
| Bridgehampton Chamber Music Festival Bridgehampton, United States | Bridgehampton, United States | — | chamber music | — | active |
| Chania Chamber Music Festival Chania Municipality, Greece | Chania Municipality, Greece | — | chamber music | — | active |
| Lockenhaus Chamber Music Festival Lockenhaus, Austria | Lockenhaus, Austria | — | chamber music | — | active |
| Australian Festival of Chamber Music Queensland, Australia | Queensland, Australia | — | chamber music | — | active |
| The International Chamber Music Festival in Plovdiv Plovdiv, Bulgaria | Plovdiv, Bulgaria | — | chamber music | — | active |
| International Chamber Music Festival of Cervo Cervo, Italy | Cervo, Italy | — | chamber music | — | active |
| Komorniki Festival of Organ and Chamber Music Komorniki, Poland | Komorniki, Poland | — | chamber music | — | active |
| Missouri Chamber Music Festival St. Louis, United States | St. Louis, United States | — | chamber music | — | active |
| Portland Chamber Music Festival Portland, United States | Portland, United States | — | chamber music | — | active |
| Sommerliche Musiktage Hitzacker Germany | Germany | — | chamber music | — | active |
| Norfolk Chamber Music Festival Norfolk, United States | Norfolk, United States | — | chamber music | — | active |
| Horten Chamber Music Festival Horten Municipality, Norway | Horten Municipality, Norway | — | chamber music | — | active |
| Laguna Beach Chamber Music Society Laguna Beach, United States | Laguna Beach, United States | — | chamber music | — | active |
| GAIA Chamber Music Festival Oberhofen, Switzerland | Oberhofen, Switzerland | — | chamber music | — | active |
| Oslo Chamber Music Festival Oslo Municipality, Norway | Oslo Municipality, Norway | — | chamber music | — | active |
| Kaustinen Chamber Music Week Kaustinen, Finland | Kaustinen, Finland | — | chamber music | — | active |
| International Chamber Music Festival of Salon-de-Provence Salon-de-Provence, France | Salon-de-Provence, France | — | chamber music | — | active |
| The Jerusalem International Chamber Music Festival Jerusalem, Israel | Jerusalem, Israel | — | chamber music | — | active |
| Oulunsalo Soi Chamber Music Festival North Ostrobothnia, Finland | North Ostrobothnia, Finland | — | chamber music | — | active |
| Beverley Chamber Music Festival Beverley, United Kingdom | Beverley, United Kingdom | — | chamber music | — | active |
| West Cork Chamber Music Festival County Cork, Ireland | County Cork, Ireland | — | chamber music | — | active |
| Trondheim Chamber Music Festival Norway | Norway | — | chamber music | — | active |
| Gotland Chamber Music Festival Sweden | Sweden | — | chamber music | — | active |
| Tallinn Chamber Music Festival Estonia | Estonia | — | chamber music | — | active |
| Swiss Chamber Music Festival Switzerland | Switzerland | — | chamber music | — | active |
| Mantova Chamber Music Festival Italy | Italy | — | chamber music | — | active |