| Clein, Louisa | Louisa Clein | Actor | 2003 | 1 | 1 |
| Clegg, Barbara | Barbara Clegg | Actor | 1958 | 3 | 1 |
| Clee, Sara | Sara Clee | Actor | 1980 | 1 | |
| Clech, Hélène | Hélène Clech | Actor | 2024 | 1 | |
| Cleater, John | John Cleater | Designer | 1994 - 1995 | 4 | |
| Cleary, Josh | Josh Cleary | Director | 2018 | 1 | |
| Cleary, John | John Cleary | Actor | 2002 | 1 | |
| Cleary, Edwin | Edwin Cleary | Actor | 1883 | 1 | |
| Clear, Valerie | Valerie Clear | Lighting Designer | 2018 | 1 | |
| Cleak, Linda | Linda Cleak | Actor | 2009 | 3 | |
| Clayton, Peter | Peter Clayton | Lighting Designer | 1975 | 1 | |
| Clayton, Joan | Joan Clayton | Costume Designer | 2006 | 1 | |
| Clayton, James | James Clayton | Actor | 1958 | 2 | |
| Clayton, Harold | Harold Clayton | Producer | 1952 - 1953 | 2 | |
| Clayton, Faith | Faith Clayton | Actor | 1969 - 1988 | 2 | |
| Clayton, Faith | Faith Clayton | Actor | 1947 | 1 | |
| Clayton, Edward | Edward Clayton | Actor | 1997 - 1998 | 4 | |
| Claypool, Kathleen | Kathleen Claypool | Actor | 1990 | 1 | 1 |
| Clayden, Tony | Tony Clayden | Designer | 1984 | 1 | |
| Clayden, Barbara | Barbara Clayden | Costume Designer | 2002 - 2025 | 6 | |
| Clayborn, Najiya | Najiya Clayborn | Actor | 2025 | 1 | |
| Clay, Philippe | Philippe Clay | Actor | 1995 | 1 | 1 |
| Clay, Paul | Paul Clay | Actor | 1982 | 1 | |
| Clay, John | John Clay | Actor | 2008 | 1 | |
| Clay, Jim | Jim Clay | Designer | 1984 | 1 | |
| Claxton, Elaine | Elaine Claxton | Actor | 2011 | 2 | |
| Claxton, Crin | Crin Claxton | Lighting Designer | 2014 | 32 | |
| Clavières, Margot | Margot Clavières | Set Designer | 2024 | 3 | |
| Clavier, François | François Clavier | Actor | 2005 | 3 | |
| Clavie, Ophélie | Ophélie Clavie | Actor | 2012 | 11 | |
| Clavelli, Chris | Chris Clavelli | Actor | 2003 | 1 | |
| Clavel, Maurice | Maurice Clavel | Adaptation | 1976 | 1 | 1 |
| Clavel, David | David Clavel | Actor | 2024 | 3 | |
| Clavé, André | André Clavé | Director | 1948 | 1 | |
| Claußner, Steffan | Steffan Claußner | Composer | 2013 | 1 | |
| Clauss, Maria | Maria Clauss | Dramaturg, Translator | 2006 | 2 | |
| Clauss, Kilian | Kilian Clauss | Actor | 2016 | 1 | |
| Clauß, Christian | Christian Clauß | Actor | 2017 | 1 | |
| Clausnitzer, Wolfgang | Wolfgang Clausnitzer | Costume Designer, Designer | 1992 - 1998 | 3 | |
| Clausnitzer, Claus Dieter | Claus Dieter Clausnitzer | Actor | 1995 - 1996 | 2 | |
| Clausius, Klaus Georg | Klaus Georg Clausius | Actor | 2001 - 2003 | 3 | |
| Clausen, Martin | Martin Clausen | Actor, Choreographer, Director | 2006 | 3 | 1 |
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