Thomas Circle Singers
- The Singers perform a wide range of classical and contemporary music, from Baroque masterworks to American spirituals and folk songs, Renaissance motets and madrigals to music of contemporary American composers. Washington DC.
- http://www.thomascirclesingers.org/

Tallis Chamber Choir
- 12-60 strong depending on the occasion, and specialising in unique and meticulously researched programmes
- http://www.thomas-tallis-society.org.uk/tallis-chamber-choir/

Trinity College Singers
- 20-30 members, auditioned annually. Dublin, Ireland.
- http://www.csc.tcd.ie/~singers/

Tallis Scholars
- English group, leading exponents of Renaissance sacred music.
- http://www.gimell.com/H02.html

Tapiola Chamber Choir
- Originally an offshoot of the world-famous Tapiola Children's Choir, the Tapiola Chamber Choir is today an independent semi-professional ensemble with about 30 members.
- http://www.englishcentre.fi/tkk/