Cantanti Camerati
- A 36-strong chamber choir which specialises in performing unaccompanied music of all periods to a high standard. Based in Richmond Upon Thames, Surrey, UK.
- http://www.cantanticamerati.org.uk/

Capitol Hill Choral Society
- Chamber choir whose repertory ranges from early music to Baroque to contemporary classics. Washington.
- http://www.bhsinging.org/cdata/caphcs.html

Cameo Singers
- Chamber choir performing in and around Wokingham, England, with a repertoire including madrigals, sacred works, part songs, and fun pieces.
- http://www.claregarner.btinternet.co.uk/

CoroAllegro
- Chamber choir from the Delaware valley, under the continued direction of Jack Warren Burnam, offering two formal concerts a year featuring both a cappella works and performances with organ, piano, or orchestra.
- http://www.coroallegro.com/

Canticum, London
- A mixed voice chamber choir based in London, England. Includes information about upcoming performances and recordings.
- http://www.canticum.org.uk/

Cappella Singers, The
- Stroud, England based choir founded in 1960. Site includes a history, performance schedule, and reviews.
- http://www.cappellasingers.co.uk/

Collegium Musicum, Warsaw
- Warsaw University Chamber Choir, Poland. Site in Polish and English.
- http://free.art.pl/coro/

Cappella Musicae Antiquae Orientalis
- Choir of orthodox music from Poznan, Poland. History, repertoire, samples of singing, pictures from concerts, and tours. Site in Polish and English
- http://cappella-orientalis.com/

Cantores Missae
- Pre-eminent liturgical vocal group from London, UK. Introduction, audio samples, and contact information.
- http://www.cantoresmissae.co.uk/

Cantillation - chorus
- A part-time, professional chamber choir based in Sydney, Australia, specialising in contemporary music. Biography, recordings, reviews, and contact information.
- http://www.cantillation.com.au/

Canonbury Chamber Choir
- Performs baroque music with authentic instruments, usually with the Holborne players. North London, England.
- http://www.canonbury.cc.freeuk.com/

Consort of Voices
- An ensemble of 12 voices, specialising in a cappella music & small-scale choral repertoire from 16th to 20th century. Edinburgh, Scotland.
- http://www.cov.org.uk/

Cathedral Youth Choir, Waterford, Ireland
- Information on the choir, its members, events being held, as well as information on joining the choir.
- http://homepage.eircom.net/~smcdonald/cyc/index.html

Carillon Chamber Choir
- The choir is formed and based in St Albans, England.
- http://www.stalbans.gov.uk/carillon/

Concora
- All-professional chorus with a reputation for artistic excellence throughout Connecticut and New England.
- http://www.concora.org/

Cantus Firmus, Copenhagen
- This Danish Chamber Choir was founded in 1980 and consists of 25 singers, of whom many were educated at the University of Copenhagen, Department of Musicology.
- http://www.cantusfirmus.dk/english.htm

Cappella Nova
- Professional vocal ensemble from Scotland, specialising in early and contemporary music.
- http://www.cappella-nova.com/

City Chamber Choir
- Since its inception, the choir's repertoire has included many masterpieces from the last five hundred years, but there has been an emphasis on the twentieth century. Rehearses on Tuesday evenings in the City of London, England and performs in historic Cit
- http://www.citychamber.org.uk/

Cambridge Taverner Choir
- Since 1986, one of Britain's leading early music chamber choirs, specialising in Renaissance polyphony. The choir makes recordings on the Herald label.
- http://www.cambridgetavernerchoir.org.uk/

Collegium Musicum of London
- Chamber choir with about 30 singers performs mainly (but not exclusively) a cappella works early and contemporary.
- http://easyweb.easynet.co.uk/stogpan/

Coro de la Facultad de Ingeniería de la UBA
- University of Buenos Aires College of Engineering Chamber Choir
- http://www.coro-de-ingenieria.com.ar/

Coral Cantigas
- Choir from Washington DC that specializes in performing the music of Spain, Latin America and the Caribbean. Site is in English and Spanish.
- http://www.cantigas.org/

Carmina Mundi
- A choir formed by young people from the region of Aachen in Germany. Site in German and English.
- http://www.heimat.de/carmina/

Coro de Cámara Adrogué
- The Choir has formed a civil society called "Association Coro de Cámara Adrogué", to promote, divulge and highlight the choral activity in Argentina. Adrogue, Buenos Aires, Argentina.
- http://www.coroadrogue.com.ar/e_ind.htm

Cantus Angelicus Choral Society
- An educational, nonprofit community choral organization in Fairfield, Iowa, open by audition to all qualified people within commuting distance.
- http://www.cangelic.org/