Opera Volunteers International 
A nonprofit organization of volunteers and associations which promotes opera through volunteer activities in the United States, Canada, and other countries.
http://www.operavol.orgAmerican Singers Opera Project 
A nonprofit program to develop American opera singers.
http://hometown.aol.com/ASOPinc/index.html
New York Opera Forum 
Gives classically trained singers the opportunity to learn and perform standard operatic repertoire in the original languages.
http://www.nyoperaforum.com/
Bel Canto Society 
Non-profit organization that publishes recordings and sponsors opera performances. Includes store, event listings, and CD reviews.
http://www.belcantosociety.org/
Richard Tucker Music Foundation 
Non-profit organization honoring the memory of the tenor at Lincoln Center's Avery Fisher Hall, granting awards to singers at three levels of development, and producing educational events nationwide.
http://www.richardtucker.org/
NewOp and C-Opera 
International meeting, listserv and web ring of contemporary opera and music theater professionals.
http://www.geocities.com/bdrogin//NewOp.html
OPERA America: The Service Organization for Opera 
National service organization based in New York supports opera and the musical arts internationally with education and awareness programs.
http://www.operaamerica.org/
California Opera Association 
Non-profit organization dedicated to artistic education and enrichment in opera.
http://www.calopera.org/
Metropolitan Opera Guild 
Supports the Metropolitan Opera in New York and encourages the appreciation of opera generally. Includes educational material, news about the Met and merchandise.
http://www.metoperafamily.org/guild/
Trubadur 
A club for Polish opera fans, with articles, reviews and interviews from Trubadur magazine), libretti of Polish operas, recordings and discussion forum. [Polish/English]
http://www.trubadur.pl/
Wagner Society of England 
Includes membership information, history, events, links to other societies worldwide, how to buy tickets to events, and an inventory of library recordings, books and CDs.
http://www.wagnersociety.org/
Opera USA 
A non-profit corporation whose mission is to promote, instruct, create and develop opera and musical theater for Americans. Includes performance dates, production schedules, singers listings, festivals and membership information.
http://www.operausa.org/
New England Opera Club 
Information about opera events, performances, repertories and recitals in the New England region.
http://neoperaclub.org/
The Northern Virginia Opera Guild 
Non-profit organization which seeks to bring opera to the region and develop support for the performing arts. Includes profiles, events past productions, membership information, resources, reviews and contact details.
http://www.operaguildnova.org/
Magdala 
A community-based musical organisation offering operatic training and concert work, based in Nottingham, England. Audio clips, events schedule and CD-ROM.
http://www.magdalanottingham.com/
University of York Opera Society 
Society for people who enjoy taking part in, being in the technical team, directing, producing or simply watching opera in and around the University of York.
http://www.operasociety.co.uk/