| Conradi, Kurt | Kurt Conradi | Director | 1963 | 1 | |
| Chaudhuri, Neel | Neel Chaudhuri | Director | 2012 | 1 | |
| Claridge, Brian | Brian Claridge | Director | 1960 | 1 | |
| Coroamă, Sorana | Sorana Coroamă | Director | 1976 | 1 | |
| Calenda, Antonio | Antonio Calenda | Director | 2013 | 7 | |
| Cond, Sandie | Sandie Cond | Director | 2013 | 1 | |
| Cella, Ettore | Ettore Cella | Director | 1957 | 2 | |
| Corrigan, Robert, W. | Robert W. Corrigan | Director | 1956 | 1 | 1 |
| Chisholm, Mary-Colin | Mary-Colin Chisholm | Director | 2013 | 1 | |
| Chase, Vincent | Vincent Chase | Director | 1956 | 1 | |
| Clemen, Harald | Harald Clemen | Director | 1998 | 1 | |
| Caldwell, Lauren | Lauren Caldwell | Director | 2000 | 1 | |
| Connell, Leon | Leon Connell | Director | 1934 | 1 | |
| Caruso, Thomas | Thomas Caruso | Director | 1999 | 1 | 1 |
| Chapelet, Olivier | Olivier Chapelet | Director | 1999 - 2000 | 5 | |
| Coe, Peter | Peter Coe | Director | 1970 | 2 | 1 |
| Carinha, Victor | Victor Carinha | Director | 2016 | 1 | |
| Cathie, Dermot | Dermot Cathie | Director | 1942 | 1 | |
| Cloetingh, A., C. | A. C. Cloetingh | Director | 1942 | 1 | |
| Capon, Eric | Eric Capon | Director | 1945 | 1 | |
| Carlson, John | John Carlson | Director | 1946 | 1 | |
| Crouch, J., H. | J. H. Crouch | Director | 1947 | 1 | |
| Cameron, Enid | Enid Cameron | Director | 1947 | 1 | |
| Christie, Alfred | Alfred Christie | Director | 2000 | 1 | 1 |
| Cisney, Michael | Michael Cisney | Director | 1947 | 1 | |
| Chaves, Armando | Armando Chaves | Director | 1948 | 1 | |
| Cooke, Anne, M. | Anne M. Cooke | Director | 1949 | 3 | 1 |
| Crăciun, Aurel | Aurel Crăciun | Director | 1964 | 1 | |
| Csurulya, Csongor | Csongor Csurulya | Director | 2008 | 2 | |
| Cosma, Flavia | Flavia Cosma | Director | 1967 | 1 | |
| Creiniceanu, Milica | Milica Creiniceanu | Director | 2004 - 2006 | 2 | |
| Chondrogiannis, Stamatis | Stamatis Chondrogiannis | Director | 1973 | 1 | |
| Coşar, Ünsal | Ünsal Coşar (Unsal Cosar) | Director | 2017 | 1 | |
| Cariello, Tom | Tom Cariello | Director | 1978 | 1 | |
| Canar, Salih | Salih Canar | Director | 1960 | 1 | |
| Cunliffe, David | David Cunliffe | Director | 1977 - 1981 | 2 | 1 |
| Carrick, Eoghan | Eoghan Carrick | Director | 2017 | 1 | |
| Coleman, Beau | Beau Coleman | Director | 2017 | 1 | |
| Cohen, Michael, R. | Michael R. Cohen | Director | 2018 | 1 | |
| Cleary, Josh | Josh Cleary | Director | 2018 | 1 | |
| Culp, Stephen | Stephen Culp | Director | 1999 | 1 | |
| Castagno, Paul | Paul Castagno | Director | 2018 | 1 | |
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