Opera Anonymous
- Accessible opera that speaks your language, founded in 1994 by two singers to give young singers opportunities to learn their craft and to make opera more accessible by performing works in English.
- http://www.ninascottstoddart.com/opanon/

Queen of Puddings Music Theatre
- Offers forward-thinking, absorbing approaches to traditional classical opera. Profiles its directors and information about past and upcoming productions.
- http://www.queenofpuddingsmusictheatre.com/

Toronto Opera Repertoire
- A community opera group under the aegis of the Toronto District School Board Continuing Education Program. Includes information about auditions, performance plans, and ticket prices.
- http://www.toronto-opera.com/

Tapestry
- Dedicated to the development and production of new and original works of music theatre and opera.
- http://www.tapestrynewopera.com/

Opera Atelier
- Specialists in Baroque opera productions, directed and choreographed by co-artistic directors Marshall Pynkoski and Jeannette Zingg.
- http://www.operaatelier.com/

Opera in Concert
- Through its mandate to feature Canadian artists, has been instrumental in promoting the careers of artists such as Richard Margison, Ben Heppner, Joanne Kolomyjec, Rosemarie Landry, Paul Frey, Jean Stilwell, Russell Braun, and Michael Schade.
- http://www.operainconcert.com/

Toronto Operetta Theatre
- Founded in 1985, this vibrant company has a mandate to produce classical operetta featuring professional Canadian artists of exceptional talent.
- http://www.torontooperetta.com/

The Canadian Opera Company
- Lists new season and general information, donors, press releases. Located in Toronto.
- http://www.coc.ca/

Autumn Leaf
- Contemporary opera performances.
- http://www.autumnleaf.com/