Publishers - C
- Cambridge University Press
- Camden Music
- Campbell Connelly
- Campbell Connelly Archive
- Canyon Records Prod.
- Capriccio
- Carisch
- Carl Fischer
- Carlanita Music
- Caroni Music
- Carus Verlag
- Carysford Press
- CelloLid.com
- Centerstream Publications
- Chanterelle
- Chappell
- Charles Colin Publications
- Charles Dumont & Son, Inc.
- Chatto & Windus
- Cherry Lane Music
- Chester Music
- Chester Special Orders
- Christian Music Ministries
- Christopher Wiggins
- Chrysalis Music Ltd
- Church Music Society
- Church Music Society Archive
- Clarsach Society
- Classical Spectrum
- Clifton-Welker
- CMA Publications
- CodaMusic
- Colne Edition
- Columbia Music Co.
- Columns Music
- Compusic
