| Cieslak , Ryszard | Ryszard Cieslak | Director | 1987 | 1 | |
| Coleman , Chris | Chris Coleman | Director | 1992 | 1 | |
| Carp, Peter | Peter Carp | Director | 1992 | 1 | |
| Capovilla, Heide | Heide Capovilla | Director | 1992 | 1 | |
| Coltof, Liesbeth | Liesbeth Coltof | Director | 1991 - 1992 | 14 | |
| Canton, AnnaLisa | Anna Lisa Canton | Director | 2014 | 1 | |
| Cantor, Max | Max Cantor | Director | 1982 | 1 | |
| Chundela, Jaroslav | Jaroslav Chundela | Director | 1982 | 1 | |
| Crowley, John | John Crowley | Director | 1993 - 1994 | 2 | |
| Cooper, Andrew | Andrew Cooper | Director | 1996 | 1 | |
| Chowdhury, Ajay | Ajay Chowdhury | Director | 1996 | 1 | |
| Cruz, Ulysses | Ulysses Cruz | Director | 1996 | 1 | |
| Connelly, Daniel, Roy | Daniel Roy Connelly | Director | 2014 | 1 | |
| Caffall, Alexandra, Kuechler | Alexandra Kuechler Caffall | Director | 2014 | 1 | |
| Comyn , Annabelle | Annabelle Comyn | Director | 2015 | 1 | |
| Calatayud, Rafael | Rafael Calatayud | Director | 2004 - 2006 | 34 | |
| Calvert, Henry | Henry Calvert | Director | 1966 | 1 | |
| Carton, Michael | Michael Carton | Director | 1966 | 1 | |
| Compton, J. C. | J. C. Compton | Director | 1998 - 2002 | 5 | |
| Cherniak, Leah | Leah Cherniak | Director | 2002 - 2007 | 2 | |
| Ciampanelli, Maurizio | Maurizio Ciampanelli | Director | 2001 | 1 | |
| C. Scarano, Adam | Adam C. Scarano | Director | 2003 | 1 | |
| Cholakova, Zlatina | Zlatina Cholakova | Director | 2003 | 1 | |
| Csizmadia, Tibor | Tibor Csizmadia | Director | 2007 | 1 | |
| Cozzubbo, Graham | Graham Cozzubbo | Director | 2003 | 2 | |
| Cooper, John | John Cooper | Director | 2004 | 1 | |
| Cloran, Daryl | Daryl Cloran | Director | 2004 | 1 | |
| Castrillo-Ferrer, Alberto | Alberto Castrillo-Ferrer | Director | 2004 | 2 | |
| Clerke, Peter | Peter Clerke | Director | 2004 | 5 | |
| Catton, Dominique | Dominique Catton | Director | 2004 | 2 | |
| Chissick, Hannah | Hannah Chissick | Director | 2004 | 1 | |
| Cmuntová, Lenka | Lenka Cmuntová | Director | 1957 | 1 | |
| Cozzens, Dan | Dan Cozzens | Director | 2005 | 1 | |
| Case Cook, Karen | Karen Case Cook | Director | 2005 | 1 | |
| Cernescu , Dinu | Dinu Cernescu | Director | 1957 | 1 | |
| Cotten, Jay | Jay Cotten | Director | 2006 | 1 | |
| Carter, Greg | Greg Carter | Director | 2007 | 1 | |
| Chivot, Dominique | Dominique Chivot | Director | 2007 - 2008 | 5 | |
| Condren, Dustin | Dustin Condren | Director | 2006 | 1 | |
| Comerford, Gary | Gary Comerford | Director | 2006 | 1 | |
| Cordeur, William, le | William le Cordeur | Director | 2006 | 1 | |
| Côté, Lorraine | Lorraine Côté | Director | 2009 | 1 | |
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