| American Opera Group: (IL) Oak Park group presents information about upcoming and past productions, tickets, special events, sponsors and donations. |
| Americolor Opera Alliance of Atlanta: (GA) Opera that celebrates American music and culture by presenting stories based upon American and Afro-centric culture and experiences. |
| Arizona Opera: (AZ) Perfoms in Phoenix and Tucson, site features season information about shows, cast, and ticket purchase. |
| Atlanta Opera: (GA) Includes schedule and ticket sales, information on educational programs, and bibliography. |
| Austin Lyric Opera: (TX) Ticketing, scheduling, and performance news. |
| Baltimore Opera: (MD) Online ticket sales (including "starving students" discount program) and cast lists for each of the season's productions. |
| Berkeley Opera: (CA) Local traveling production company. Current performance and ticket information. |
| Black Box Opera Theater: (WA) Seattle-based repertory company |
| Boston Children's Opera: (MA) Opera company producing full-length operas sung by children aged 7-15 for children. |
| Brooklyn Academy of Music: (NY) Offers varieties of performing arts |
| Buffalo Opera Theatre: (NY) Calendar, news and contact information |
| California Chamber Opera: (CA) - produces and commissions new works, new translations of existing works, and new productions of standard repertoire. |
| Canton Comic Opera Company: (OH) dedicated to the preservation and performance of American comic operas and operettas. |
| Cape Cod Opera: (MA) fully staged opera showcasing local and regional professional talent. |
| Capitol City Opera Company: (GA) Year-round opera performances in Atlanta and the surrounding metro areas. Performance schedule and news, library, and ticket sales. |
| Casa Italiana Opera Company: (CA) Presents several operas each year; specializing in Italian Operas. Based in Los Angeles. |
| Center for Contemporary Opera: (NY) Dedicated to the creation and performance of contemporary American opera and opera in English. |
| Central City Opera: (CO) Includes details about the current schedule, outreach program, news and history |
| Chautauqua Opera Company: (NY) Productions in English, opportunities for young artists, season info |
| Chicago Opera Theater: (IL) Official website, online tickets purchase, season and company information. |
| Cincinnati Opera: (OH) performs major works, season info |
| City Concert Opera Orchestra: (CA) Professional San Francisco-based period instrument organization presenting opera in concert format. |
| Civic Opera Theater of Kansas City: (MO) Schedule, auditions, and history. |
| Cleveland Opera: (OH) Presents opera, operettas, and musicals at the State Theatre in Playhouse Square. |
| Comic Opera Guild: (MI) Touring company presenting operetta in English translations. Orchestrations also available. |
| Concert Opera: (PA) Opera performed in a concert setting. |
| Connecticut Grand Opera and Orchestra: (CT) Season schedule, synopses, and ticket information. |
| Connecticut Opera: (CT) History and highlights, performance schedule and ticket ordering information from Hartford-based performing arts organization. |
| Contemporary Opera of Los Angeles: (CA) Opera in contemporary settings, sung in English. |
| DeStefano Presents: (NY) Details of the opera company, performances and performers. Ordering information for their CD. |
| Florentine Opera: (WI) Info about current season and special events, tickets, history, educational programs, merchandise |
| Fort Worth Opera: (TX) Performs major works, has a young artist program, and performs school tours. |
| Gloriana Opera Company: (CA) Community musical theater, some operetta |
| Golden Gate Opera: (CA) Schedule, audition and internship information, and past performances. |
| Greensboro Opera Company: (NC) Production details, tickets and information |
| Harrisburg Opera Association: (PA) Season, educational outreach, and historical information |
| Houston Grand Opera: (TX) Calendar and ticket information. Includes history of HGO. Studio artist program. |
| Hudson Opera Theatre of New York and New Jersey: (NY) Season schedule, history |
| Juneau Lyric Opera: (AK) Opera and Musical Theatre since 1975. |
| Lake George Opera: (NY) Details of upcoming events, company background, reviews of previous productions, and opera education program. |
| Light Opera Works: (IL) Performing light operas and operettas. |
| Long Beach Opera: (CA) Details of upcoming performances, background information on company, plus photos and reviews. |
| Long Leaf Opera: (NC) Information about the current season's operas, including background information and web resources for each opera. Online ticketing. |
| Los Angeles Opera: (CA) - performs major works, season and production info |
| Lowell Opera Company: (MA) Background information, upcoming events and reviews of recent events, plus audition details. |
| Lyric Opera of Chicago: (IL) International-level opera company. Details about the current season, tickets (online ordering), special events, radio broadcasts, education programs, press releases, history and online shopping. |
| Lyric Opera of Kansas City: (MO) Periodic performances of contemporary and traditional, original-language opera. |
| LyriCo of St. Louis: (MO) Not-for-profit organization devoted to the performance and promotion of the lyric opera repertoire. |
| Martinez Opera: (CA) Regional opera company in northern California area |
| Metropolitan Opera: (NY) Complete information, history, and other opera resources |
| Michigan Opera Theatre: (MI) - Detroit-based company presenting major works, season info |
| Mobile Opera: (AL) - performances at Mobile Civic Center |
| Muddy River Opera Company: (IL) Contact information only. A community program from Quincy University. |
| New Jersey Opera Theater: (NJ) Presenting concert performances. Company history, upcoming productions, education and support programs and contact details. |
| New Orleans Opera Association: (LA) Seating charts, ticket information, and administrative information. |
| New Rochelle Opera: (NY) Calendar and contact information. |
| New York Chamber Opera: (NY) Past and present productions, creative staff, and current and upcoming performances. |
| New York City Opera: (NY) Major works, season and company information |
| New York Gilbert and Sullivan Players: (NY) Professional repertory G&S ensemble. Calendar, ticket information |
| New York Grand Opera Company: (NY) Performances, repertoire. Free opera in Central Park |
| Northwest Opera: Compiled listing of companies in Oregon, Washington, and Alaska. |
| Opera A La Carte: Gilbert and Sullivan: (Touring) Schedule, productions, references, reviews, contacts, and related information. |
| Opera Colorado: (CO) Current season, performers, company and education programs. Online ticketing and newsletter. |
| Opera Company of Brooklyn: (NY) Upcoming performances and programs, special events, contact details. |
| Opera Company of Philadelphia Production Department: (PA) Information about scenery, including plans and photos. |
| Opera East Texas: (TX) Annual season of staged and concert opera in East Texas. |
| Opera Ebony: (NY) African-American opera company. Information about artists, tours and projects. |
| Opera for the Young: (Touring) A professional opera company performing in schools throughout the Midwest. |
| Opera Grand Rapids: (MI) Performance schedule, photograph gallery, auditions calendar. |
| Opera Idaho: (ID) Season information, events |
| Opera Illinois: (IL) Schedules, artists and events |
| Opera League of New Hampshire: (NH) Schedules, synopses, cast and staff information |
| Opera Memphis: (TN) Current season, ticket ordering, merchandise, quizzes, and games. |
| Opera North: (NH) Schedule of productions and events, history, staff listings, newsletter, Young Artists Program. |
| Opera Pacific: (CA) Season schedule, history, tickets |
| Opera Pacifica: (WA) Events calendar, contact details, details of friends and sponsors. |
| Opera San Jose: (CA) Performance schedule, resident artist profiles, educational programs and ticket information. |
| Opera Vivente: (MD) - Chamber opera company, season information |
| OperaModa: (IL) Chicago area opera company specializing in American operas. |
| Orlando Opera: (FL) Calendar of events, volunteer opportunities, and tickets. |
| Pacific Repertory Opera: (CA) - Current season, special events and more. |
| Pittsburgh Opera: (PA) Eighth-oldest opera company in the U.S. Major works presented annually. |
| Pocket Opera: (CA) Season information, events, staff, tickets |
| Portland Opera: (OR) Schedule and ticket information. |
| Portland Opera Repertory Theatre: (ME) Production of major opera and other events |
| Rochester Aria Group: (MN) Dedicated to the performance of classical vocal music and providing performance opportunities for area singers. |
| Sacramento Opera: (CA) Regional professional opera, season information |
| San Antonio Opera: (TX) Includes season schedule and information about tickets, educational programs and membership. |
| San Diego Opera: (CA) Current season, Recital Program, Membership and Sponsorship opportunities, Education program, Company History, the Scenic Studio. |
| San Francisco Lyric Opera: (CA) Dedicated to the performance of classical opera, traditionally staged and sung in the original language with English supertitles. |
| San Francisco Opera: (CA) Major operatic works, season and cast information |
| Santa Fe Opera: (NM) Summer opera programs, major works |
| Sarasota Opera: (FL) Performance schedules, ticketing and educational programs. |
| Seattle Opera: (WA) Calendar and online ticket sales |
| Sonoma City Opera: (CA) Standard operatic repertoire as well as premieres |
| Southland Opera: (CA) Community outreach company |
| Summer Opera Theatre Company: (DC) Showcases young and more established artists, aims to bring fully mounted and affordable professional opera to the public. |
| Tacoma Opera: (WA) Season information, cast bios |
| Teatro Lirico d'Europa: (Touring) From Europe, the US's most successful touring opera company. |
| The Amato Opera: (NY) Schedule, reviews, photographs, and past seasons. |
| The Birmingham Music Cooperative: (AL) Grand opera, two to three productions each season |
| The Bostonian Opera and Concert Ensemble: (MA) A repertory company presenting opera, music theatre and concerts in Boston and the surrounding area. |
| The Dallas Opera: (TX) Production information, news updates, archives, and broadcasts. |
| The Living Opera: (TX) North Texas area chamber opera featuring emerging artists and educational outreach programs. |
| The Midwest Lyric Opera Company: (MO) Small regional company in St. Louis presenting opera, operetta and vocal performances, utilizes regional artists and singers. |
| The Opera Company of Astoria: (NY) Dedicated to bringing quality opera to the community. |
| The Village Light Opera of New York City: (NY) Long standing amateur company which puts on two productions a year. |
| Toledo Opera: (OH) Season schedule, tour, ticket ordering, and links. |
| Tri-Cities Opera Homepage: (NY) Season and cast information |
| Tulsa Opera: (OK) Schedule, artist profiles, tickets, and links. |
| Utah Festival Opera Company: (UT) Summer opera program. |
| Vermont Opera Theater: (VT) Small company featuring professional singers and instrumentalists. |
| Vero Beach Opera Guild: (FL) Dedicated to promoting opera in the community and classroom, plus providing scholarships to promising students. |
| Virginia Opera: (VA) Schedule and tickets. Presentations in multiple cities |
| Washington National Opera: (DC) News, season and company info, young artist program, production rentals, and more |
| West Bay Opera: (CA) Schedule, reviews and information about upcoming events. |
Classical
