| Curi, Giandomenico | Giandomenico Curi | Director | 1965 | 1 | |
| Cattaneo, Bruno | Bruno Cattaneo | Actor | 1965 | 1 | |
| Coreno, Dora | Dora Coreno | Actor | 1965 | 1 | |
| Coninck, Marie-Louise | Marie-Louise Coninck | Actor | 1964 - 1993 | 2 | |
| Carlson, Marvin, A. | Marvin A. Carlson | Adaptation, Director | 1964 - 1984 | 4 | 1 |
| Crawley, Tom | Tom Crawley | Actor | 1964 - 1975 | 3 | |
| Costa, Julia | Julia Costa | Actor | 1964 - 1968 | 2 | 1 |
| Charilaou, Voula | Voula Charilaou | Actor | 1964 - 1967 | 3 | |
| Chomont, Kenneth | Kenneth Chomont | Actor | 1964 - 1966 | 2 | |
| Cellier, Peter | Peter Cellier | Actor | 1964 - 1965 | 4 | |
| Caddick, Edward | Edward Caddick | Actor | 1964 - 1965 | 3 | |
| Conrads, Grete | Grete Conrads | Actor | 1964 | 1 | |
| Chrol, L. | L. Chrol | Actor | 1964 | 1 | |
| Chait, Matthew | Matthew Chait | Actor | 1964 | 1 | 1 |
| Cohen, Leonard | Leonard Cohen | Actor | 1964 | 1 | |
| Curland, Victor | Victor Curland | Actor | 1964 | 1 | |
| Clément, Gunnar | Gunnar Clément | Designer | 1964 | 1 | |
| Cole, George | George Cole | Actor | 1964 | 2 | |
| Cyll, Renate | Renate Cyll | Actor | 1964 | 2 | |
| Corkery, Frank | Frank Corkery | Designer | 1964 | 1 | |
| Carmel, Roger, C. | Roger C. Carmel | Actor | 1964 | 1 | |
| Caine, Howard | Howard Caine | Actor | 1964 | 1 | |
| Constanz, Dorothea | Dorothea Constanz | Actor | 1964 | 1 | |
| Carr, Carol | Carol Carr | Actor, Dancer | 1964 | 4 | |
| Colson, C.David | C.David Colson | Actor | 1964 | 1 | |
| Carrillo, Marta, Beatriz | Marta Beatriz Carrillo | Actor | 1964 | 1 | |
| Chavira, Aracelia | Aracelia Chavira | Actor | 1964 | 1 | |
| Colda, Ana | Ana Colda | Actor | 1964 | 1 | |
| Ciupe, Th. | Th. Ciupe | Designer | 1964 | 1 | |
| Crăciun, Aurel | Aurel Crăciun | Director | 1964 | 1 | |
| Ciornei, Boris | Boris Ciornei | Actor | 1964 | 1 | |
| Collins, Richard | Richard Collins | Sound Designer | 1964 | 1 | |
| Conington, Ken | Ken Conington | Actor | 1964 | 1 | |
| Crilla, Hedy | Hedy Crilla | Actor, Director | 1964 | 2 | |
| Campion, Joyce | Joyce Campion | Actor | 1963 - 1989 | 7 | |
| Cozorici, Gheorghe | Gheorghe Cozorici | Actor, Assistant Director | 1963 - 1988 | 4 | |
| Cojar, Ion | Ion Cojar | Assistant Director, Director | 1963 - 1985 | 5 | |
| Casarín, Angel | Angel Casarín | Actor | 1963 - 1981 | 3 | |
| Corbin, Barry | Barry Corbin | Actor, Lighting Designer | 1963 - 1977 | 2 | |
| Cecchini, Ivan | Ivan Cecchini | Actor | 1963 - 1973 | 13 | |
| Conzelmann, Wolf | Wolf Conzelmann | Composer | 1963 - 1964 | 2 | |
| Christian, Jane | Jane Christian | Actor | 1963 | 1 | |
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