Stairwell Carollers
- Small chamber a cappella choir whose repertoire includes seasonal carols, as well as music of the Renaissance. Ottawa, Canada.
- http://www.stairwellcarollers.com/

St Philip Neri Singers
- Based at the Church of the Holy Name in Manchester, singing a wide variety of massess and motets from the 16th century to the present day.
- http://www.w4wmedia.co.uk/pns/

St Albans Chamber Choir
- A major contributor to the musical life of the St Albans area, England.
- http://homepage.ntlworld.com/keith.dobbs/SACC/

Southampton University Chamber Choir
- 25-30 singers who enjoy singing all sorts of music and having parties.
- http://www.chamber-choir.org.uk

Scottish Chamber Orchestra Chorus
- Provides the Orchestra with a resident choir. Link to the choir on the orchestra home page.
- http://www.sco.org.uk/

Sevenoaks, The Cantate Choir
- Large chamber choir focused on quality performances. Brief information, including upcoming events and ticket prices. Sevenoaks, Kent, UK.
- http://www.cantate-choir.info/

St. Martin's Chamber Choir
- A professional ensemble of 20 voices from Denver, Colorado USA
- http://www.stmartinschamberchoir.org/

Schola Cantorum of Oxford
- Oxford University's longest running chamber choir.
- http://users.ox.ac.uk/~schola/

St Thomas Singers
- A chamber choir of about 25 voices from Newcastle upon Tyne, England.
- http://www.singers.org.uk/

Southport Bach Choir
- English chamber choir - over the years the choir has grown to around forty.
- http://www.merseyworld.com/sbs/

South London Singers
- 40 singers chamber choir with English music as a speciality. Beckenham, England.
- http://www.harmony.demon.co.uk/sls/index.htm

Somerset Chamber Choir
- English chamber choir singing music from medieval times through to the present day.
- http://users.powernet.co.uk/rex/index.html

Sjølund Kammerkor
- A mixed choir from Copenhagen, Denmark. The main repertoire of the choir is sacred a capella music from the renaissance and forward. Site in Danish with information in English, German and Russian.
- http://www.sjoelundkammerkor.dk/

The Sixteen
- Internationally known English choral group with a supporting orchestra, concentrating on the heritage of early English polyphony, the masterpieces of the Renaissance as well as a diversity of twentieth century choral work.
- http://www.the-sixteen.org.uk/

Summa Musica Chamber Choir
- An a cappella choir based in Perth, Western Australia, Australia
- http://www.iinet.net.au/~martins/

South Bend Chamber Singers
- A semi-professional choir specializing in music of the 20th century. Saint Mary's College, South Bend, Indiana.
- http://users.michiana.org/sbcs1/

Southern Voices
- A chamber choir based in Winchester, Hampshire, England.
- http://www.hants.org.uk/southernvoices/

San Francisco Choral Artists
- A twenty-voice chamber choir that mainly performs music by 20th Century composers.
- http://www.sfca.org/

Sacred and Profane Chamber Chorus
- Since its inception, the group has concentrated on a cappella works of the medieval era, the Renaissance and the 20th century. Oakland and Berkeley, California, USA.
- http://sacredprofane.org/