| Cambridge University Music Library | |   |
| Canadian Music Centre | | |
| Carl Fischer Music LLC-rental | See: Theodore Presser Company | |
| Casa Rustica Publications | publicising Larry Bell compositions |  |
| Centre De Documentattion de la Musique | | |
| Composers Edition | | |
| Belg. Document Centr.voor hedendaagse muziek | | |
| Chester | See Novello | |
| Clivis Publicacions | | |
| CM Editiones Musicales s.l. | | |
| Contempory Music Centre Ireland | | |
| Canadian Music Centre CCMC) | | |
| Centrum Nederlandse Muziek | | |
| Edition Combre | | |
| Complete Music ltd | Since 1991 also Lengnick and | |
| Copy-us | | |
| Costallat | since 1958 Billaudot | |
| Croatian Music Information Centre | | |
| Musicbase.cz | | |
| Czech Music Centre | | |