| Central Library Theatre | Central Library Theatre | Canada, Toronto | 1959-04-24 | -- | 1959 | 1 | |
| Comedy Theatre | Comedy Theatre | England, London, Panton Street | 1960-01-05 | 2001-07-14 | 1960 - 2001 | 2 | |
| College Hall, University of South Australia | College Hall, University of South Australia | Australia, Adelaide, University of South Australia | 1961-12-14 | 1961-12-15 | 1961 | 1 | |
| College Theatre, San Jose State College | College Theatre, San Jose State College | United States, San Jose, 1 Washington Sq | 1963-03-22 | 1963-03-30 | 1963 | 1 | |
| Carlisle Foyer, Alumni Hall, Springfield College Campus | Carlisle Foyer, Alumni Hall, Springfield College Campus | United States, Springfield, 263 Alden Street | 1963-07-16 | 1963-07-20 | 1963 | 1 | |
| Colden Center, Queens College of The City University of New York | Colden Center, Queens College of The City University of New York | United States, Flushing, 65-30 Kissena Boulevard | 1963-07-19 | 1963-07-27 | 1963 | 1 | |
| Československá televize, Studio Praha | Československá televize, Studio Praha | Czech Republic, Prague | 1964-10-28 | 1994-05-04 | 1964 - 2000 | 13 | |
| Curran Theatre | Curran Theatre | United States, San Francisco, 445 Geary St | 1965-01-04 | 1965-01-23 | 1965 | 1 | |
| Cincinnati Playhouse in the Park | Cincinnati Playhouse in the Park | United States, Cincinnati, Mount Adams Circle | 1965-04-07 | -- | 1965 | 1 | |
| Close Theatre Club | Close Theatre Club | Scotland, Glasgow | 1968-09-25 | 1968-10-13 | 1968 | 1 | |
| Chichester Festival Theatre | Chichester Festival Theatre | England, Chichester, West Sussex, A286 | 1970-05-13 | 2016-05-21 | 1970 - 2016 | 3 | |
| Canberra Theatre Centre | Canberra Theatre Centre | Australia, Canberra, Civic Square, London Circuit | 1970-05-14 | 2007-05-26 | 1970 - 2007 | 4 | |
| Canale 2 | Canale 2 | Italy, Altamura (BA), Via Giovanni Bovio 1, 70022 Altamura (BA) | 1970-05-20 | -- | 1970 | 1 | |
| Citizen's Theatre | Citizen's Theatre | Scotland, Glasgow, 119 Gorbals Street | 1970-06-03 | 2009-05-30 | 1970 - 2009 | 5 | |
| Cambridge Theatre | Cambridge Theatre | England, London, Earlham St | 1970-06-29 | -- | 1970 - 1982 | 2 | |
| Cellar Stage Theater | Cellar Stage Theater | United States, Northfield | 1972-02-11 | 1972-02-19 | 1972 | 1 | |
| Citadel Theatre | Citadel Theatre | Canada, Edmonton | 1972-03-22 | 1996-10-06 | 1972 - 1996 | 3 | |
| Clark Center for the Performing Arts | Clark Center for the Performing Arts | United States, Arroyo Grande, 487 Fair Oaks Avenue | 1972-09-30 | 1972-10-09 | 1972 | 1 | |
| Colonnade Theatre | Colonnade Theatre | Canada, Toronto | 1972-10-30 | -- | 1972 | 1 | |
| Circle Theater Company | Circle Theater Company | United States, Manhattan, Broadway and 83rd street | 1973-04-15 | -- | 1973 | 1 | |
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Venues
