| Casamonti, Stefano | Stefano Casamonti | Assistant Director, Designer | 1997 - 1999 | 2 | |
| Catani, Matteo | Matteo Catani | Actor | 2006 | 2 | |
| Capuano, Maurizio D. | Maurizio D. Capuano | Actor, Adaptation | 2013 | 2 | |
| Coppola, Michela | Michela Coppola | Actor, Composer | 2013 | 2 | |
| Coccimiglio, Antonio | Antonio Coccimiglio | Actor | 2018 | 2 | |
| Castagna, Mauro | Mauro Castagna | Actor | 2022 | 2 | |
| Casonato, Simona | Simona Casonato | Actor | 2012 | 2 | |
| Cannas, Tiziano | Tiziano Cannas | Composer | 2018 | 2 | |
| Colturi, Michele | Michele Colturi | Dancer | 2018 | 2 | |
| Cirri, Davide | Davide Cirri | Actor | 2018 | 2 | |
| Costantini, Giuditta | Giuditta Costantini | Actor | 2018 | 2 | |
| Costanzo, Doriana | Doriana Costanzo | Actor | 2018 | 2 | |
| Ciarrochi, Sara | Sara Ciarrochi | Actor | 2017 | 2 | |
| Carstensen, Stian | Stian Carstensen | Composer, Musician | 2005 - 2024 | 2 | |
| Carbonelli, Ricardo Polizzy | Ricardo Polizzy Carbonelli | Actor | 1998 - 1999 | 3 | |
| Cattani, Maria | Maria Cattani | Actor | 1998 - 1999 | 3 | |
| Cameron, John | John Cameron | Director, Producer, Sound Designer | 2005 | 3 | |
| Calander, Carl-Hugo | Carl-Hugo Calander | Actor | 1971 - 1974 | 3 | |
| Candeau, Alberto | Alberto Candeau | Actor | 1954 - 1976 | 3 | |
| Canfield, Curtis | Curtis Canfield | Director | 1940 - 1964 | 3 | |
| Carleton, Royce | Royce Carleton | Actor | 1889 - 1891 | 3 | 1 |
| Carlsén, Sigrid | Sigrid Carlsén | Actor | 1907 - 1908 | 3 | |
| Carlsson, Ralph | Ralph Carlsson | Actor | 2000 - 2004 | 3 | 2 |
| Carr, Jason | Jason Carr | Composer | 1996 - 1997 | 3 | |
| Carson, Jeannie | Jeannie Carson | Actor | 1975 - 1992 | 3 | |
| Caspari, Matthias | Matthias Caspari | Actor | 2003 - 2008 | 3 | 1 |
| Chambers, Ray | Ray Chambers | Actor | 1997 - 2016 | 3 | |
| Chatziiakovou, Vera | Vera Chatziiakovou | Actor | 2006 | 3 | |
| Cherry, Ron | Ron Cherry | Actor | 1967 - 1976 | 3 | |
| Christensen, Richard | Richard Christensen | Actor | 1936 - 1939 | 3 | |
| Claire, Jennifer | Jennifer Claire | Actor | 1970 | 3 | |
| Clausen, Andrea | Andrea Clausen | Actor | 1989 - 1997 | 3 | |
| Colby, Barbara | Barbara Colby | Actor | 1973 - 1975 | 3 | 1 |
| Collins, Rufus | Rufus Collins | Actor | 1998 - 1999 | 3 | |
| Comden, Betty | Betty Comden | Adaptation, Translator | 1982 - 2012 | 3 | 1 |
| Conejero, Laura | Laura Conejero | Actor | 2004 - 2020 | 3 | 5 |
| Conradt, Volker | Volker Conradt | Actor | 1966 - 1992 | 3 | |
| Craigie, Ingrid | Ingrid Craigie | Actor | 1975 - 1991 | 3 | |
| Crutchley, Rosalie | Rosalie Crutchley | Actor | 1941 - 1958 | 3 | |
| Csikós, Ildikó | Ildikó Csikós | Dramaturg | 2003 - 2004 | 3 | |
| Cywińska, Izabella | Izabella Cywińska | Director | 1982 - 1994 | 3 | |
| Cusack, Niamh | Niamh Cusack | Actor | 1993 - 2016 | 3 | 1 |
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