| Claris de Florian, Jean-Pierre | Jean-Pierre Claris de Florian | Composer | 2004 | 1 | |
| Cón, Karel | Karel Cón | Composer | 2000 | 1 | |
| Cristei, Cornel | Cornel Cristei | Composer | 2010 | 2 | |
| Cullen, Ian | Ian Cullen | Composer | 2005 | 1 | |
| Covalescu, Anatol | Anatol Covalescu | Composer | 1963 | 1 | |
| Cári, Tibor | Tibor Cári | Composer | 2012 - 2013 | 5 | |
| Chalosse, Marc | Marc Chalosse | Composer | 2007 | 9 | |
| Cossa, Mariano | Mariano Cossa | Composer | 2006 | 2 | |
| Conde, Antonio Díaz | Antonio Díaz Conde | Composer | 1954 - 1956 | 2 | |
| Crockett, Zachary | Zachary Crockett | Composer | 2006 | 1 | |
| Crewdson, Will | Will Crewdson | Composer | 2008 | 2 | |
| Clohessy, Denis | Denis Clohessy | Composer | 2008 | 1 | |
| Carlsson, Li | Li Carlsson | Composer | 2009 | 1 | |
| Conzelmann, Wolf | Wolf Conzelmann | Composer | 1963 - 1964 | 2 | |
| Claußner, Steffan | Steffan Claußner | Composer | 2013 | 1 | |
| Chadabe, Joel | Joel Chadabe | Composer | 1957 | 1 | |
| Cooke, Arnold | Arnold Cooke | Composer | 1932 | 1 | |
| Cagnolari, Christophe | Christophe Cagnolari | Composer | 1999 | 10 | |
| Chèze, Bernard | Bernard Chèze | Composer | 1999 | 10 | |
| Capiba, - | - Capiba | Composer | 1949 | 1 | |
| Chamberland, Yves | Yves Chamberland | Composer | 2016 | 1 | |
| Cicchelli, Rodrigo | Rodrigo Cicchelli | Composer | 1991 | 1 | |
| Coax, - | - Coax | Composer | 1993 | 1 | |
| Christodoulides, Michalis | Michalis Christodoulides | Composer | 2017 | 2 | |
| Coyne, Sean | Sean Coyne | Composer | 2018 | 1 | |
| Christodoulopoulos, Giannis | Giannis Christodoulopoulos | Composer | 2017 | 1 | |
| Coulter, David | David Coulter | Composer | 2022 | 1 | |
| Cansiano, Alexis | Alexis Cansiano | Composer | 2005 - 2014 | 5 | |
| Cuadrado, Francisco | Francisco Cuadrado | Composer | 2012 | 1 | |
| Cazaux, Frédérick | Frédérick Cazaux | Composer | 2017 | 1 | |
| Cantelon, Paul | Paul Cantelon | Composer | 2013 | 1 | |
| Corbett, Sidney | Sidney Corbett | Composer | 2021 | 1 | |
| Cyril, Cyril | Cyril Cyril | Composer | 2021 | 1 | |
| Cobert, Bob | Bob Cobert | Composer | 1962 | 1 | |
| Cuttler, Mishelle | Mishelle Cuttler | Composer | 2024 | 1 | |
| Costagliola, Michael | Michael Costagliola | Composer | 2019 | 1 | |
| Colleoni, Mario Corti | Mario Corti Colleoni | Composer | 1975 | 1 | |
| Ciprani, Stelvio | Stelvio Ciprani | Composer | 1984 | 1 | |
| Cannas, Tiziano | Tiziano Cannas | Composer | 2018 | 2 | |
| Chang, Nicola T. | Nicola T. Chang | Composer | 2024 | 1 | |
| Chowdhury, Neelam, Mansingh | Neelam Mansingh Chowdhury | Composer, Designer, Director | 2008 | 3 | |
| Chołodziński, Piotr | Piotr Chołodziński | Composer, Director | 2007 - 2010 | 3 | 1 |
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