| Carducci, Giacomo, Calò | Giacomo Calò Carducci | Designer | 1969 | 2 | |
| Ciarrocchi, Dafne | Dafne Ciarrocchi | Costume Designer | 1969 | 2 | |
| Campisi, Gaetano | Gaetano Campisi | Actor | 1969 | 2 | |
| Chee, Mia | Mia Chee | Actor, Producer | 2014 | 2 | |
| Cabral, Sadi | Sadi Cabral | Actor | 1969 | 2 | |
| Clapp, Gordon | Gordon Clapp | Actor | 1969 - 2017 | 2 | |
| Counsman, Karlene | Karlene Counsman | Actor | 1967 - 1969 | 2 | |
| Cassinelli, Claudio | Claudio Cassinelli | Actor | 1968 | 2 | |
| Cree, Rick | Rick Cree | Designer, Lighting Designer | 2008 | 2 | |
| Cherian, Anita | Anita Cherian | Dramaturg | 2008 - 2009 | 2 | |
| Chop, Eleonore | Eleonore Chop | Actor | 1968 | 2 | |
| Costa, Julia | Julia Costa | Actor | 1964 | 2 | |
| Csendes, László | László Csendes | Actor | 1970 | 2 | |
| Capodilupo, Tony | Tony Capodilupo | Actor | 1967 | 2 | |
| Cranmer, Sarah | Sarah Cranmer | Actor | 1967 | 2 | |
| Cranney, Jon | Jon Cranney | Actor | 1966 | 2 | |
| Campbell, Charles | Charles Campbell | Actor | 1951 - 1966 | 2 | |
| Chromek, Rudolf | Rudolf Chromek | Actor | 1960 - 2012 | 2 | |
| Coffin, Frederick | Frederick Coffin | Actor | 1966 | 2 | |
| Chomont, Kenneth | Kenneth Chomont | Actor | 1964 - 1966 | 2 | |
| Cardoso, Celso | Celso Cardoso | Designer | 1958 | 2 | |
| Cloffe, - | - Cloffe | Costume Designer, Designer | 1966 | 2 | |
| Clausen, Axel | Axel Clausen | Lighting Designer | 1959 | 2 | |
| Claasen, Günter | Günter Claasen | Actor | 1966 | 2 | |
| Campbell, Gar | Gar Campbell | Actor, Director | 1966 - 1999 | 2 | |
| Council, Elizabeth | Elizabeth Council | Actor | 1965 | 2 | |
| Cmíralová, Jarmila | Jarmila Cmíralová | Actor | 1960 | 2 | |
| Cawley, Barbara | Barbara Cawley | Actor | 1965 | 2 | |
| Callahan, Mary, Therese | Mary Therese Callahan | Actor | 1965 | 2 | |
| Carlin, Chet | Chet Carlin | Actor | 1965 | 2 | |
| Csíky, András | András Csíky | Actor | 1972 | 2 | |
| Castaldi, Francesca | Francesca Castaldi | Lighting Designer, Sound Designer | 2002 | 2 | |
| Cruz, Irene | Irene Cruz | Actor | 2002 | 2 | |
| Coseglia, Jared | Jared Coseglia | Sound Designer | 2002 | 2 | |
| Cherniak, Leah | Leah Cherniak | Director | 2002 - 2007 | 2 | |
| Coffin, Gregg | Gregg Coffin | Composer, Sound Designer | 2002 | 2 | |
| Coffey, Julia | Julia Coffey | Actor | 2002 - 2016 | 2 | |
| Condorelli, Noemi | Noemi Condorelli | Actor | 2002 | 2 | |
| Cambiale, Eva | Eva Cambiale | Actor | 2003 | 2 | |
| Cofalka-Adami, Klaus | Klaus Cofalka-Adami | Actor | 2003 | 2 | |
| Csűrös, Karola | Karola Csűrös | Actor | 1971 | 2 | |
| Cotton, Oliver | Oliver Cotton | Actor | 2003 | 2 | |
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