- The Church Keys -- The Chymes of Freedom
- The Ciaran Kelly Ceilidhe -- The Cincinnati Suds
- The Cindells -- The Cipher
- The Circadians -- The Circles
- The Circles Quartet -- The Cisco Fix
- The Citadel -- The City Champs
- The City Council -- The City of Prague Philharmonic & Crouch End Festival Chorus
- The City Of Prague Philharmonic & Nic Raine -- The Civil Tones
- The Civil Wars -- The Clare Fischer Voices
- The Clare Sisters -- The Clark Sisters
- The Clark Sisters and Orchestra -- The Classic
- The Classic Brown -- The Classics 5
- The Classmates -- The Clean Prophets
- The Cleaners -- The Cleft Way
- The Cleftones -- The Cleveland Orchestra Chorus
- The Cleveland Orchestra Chorus [Choir] -- The Clickettes
- The Clicks -- The Clifford Jordan Big Band
- The Clifford Thornton New Art Ensemble -- The Clinton Adminstration
- The Clintons -- The Clock Work Army
- The Clockhouse -- The Cloud Room