| CSU Department of Theatre | CSU Department of Theatre | 2004 | 1 | |
| Compañía de José Tallaví | Compañía de José Tallaví | 1906 | 2 | |
| Compagnia Reinach / Gramatica | Compagnia Reinach / Gramatica | 1896 | 3 | |
| Cercle des Echoliers | Cercle des Echoliers | 1892 | 1 | |
| Chosun Actors School | Chosun Actors School | 1925 | 1 | |
| Compagnia Piamonti-Baccani | Compagnia Piamonti-Baccani | 1896 | 1 | |
| Canberra Repertory Society | Canberra Repertory Theatre (Canberra Repertory Society) | 1953 – 2019 | 6 | |
| Compagnia Drammatica Italiana - Tournée Zacconi | Compagnia Drammatica Italiana - Tournée Zacconi | 1904 – 1929 | 4 | |
| Compañía Valderrabanos, Witemberg y Romo, La | La Compañía Valderrabanos, Witemberg y Romo | 2010 | 1 | |
| Centre Dramatique National d'Aubervilliers | Centre Dramatique National d'Aubervilliers | 1987 – 2004 | 5 | |
| Century Center for the Performing Arts | Century Center for the Performing Arts | 1998 – 2002 | 12 | |
| Compagnia De Farro | Compagnia De Farro | 1895 | 1 | |
| Ceļojoša teātris | Ceļojoša teātris | 1923 | 1 | |
| Comédie de Rennes, La | La Comédie de Rennes | 1982 | 1 | |
| Compagnia De Sanctis | Compagnia De Sanctis | 1900 | 11 | |
| Compagnia Spazio Zero | Compagnia Spazio Zero | 1999 | 1 | |
| Christiania Folketheater | Christiania Folketheater | 1880 | 2 | |
| Compagnia P. Drago | Compagnia P. Drago | 1892 | 5 | |
| Comédie de Lyon | Comédie de Lyon | 1980 | 1 | |
| Compagnia sociale di Renzi | Compagnia sociale di Renzi | 1894 | 1 | |
| Compagnia Zacconi-Duse | Compagnia Zacconi-Duse | 1921 | 6 | |
| Casa de Teatro de Sintra | Casa de Teatro de Sintra | 2006 – 2007 | 2 | |
| Compagnia Maggi-Della Guardia | Compagnia Maggi-Della Guardia | 1899 | 1 | |
| California State University, Chico's Department of Theatre | California State University, Chico's Department of Theatre | 2011 | 1 | |
| Centro Cultural Vila Flor | Centro Cultural Vila Flor | 2007 – 2008 | 6 | |
| Compagnia Drammatica Giovan Battista Marini | Compagnia Drammatica Giovan Battista Marini | 1892 – 1894 | 14 | |
| Compagnia Irma Gramatica | Compagnia Irma Gramatica | 1901 | 3 | |
| Compagnia Zacconi-Pilotto-Sciarra | Compagnia Zacconi-Pilotto-Sciarra | 1894 – 1921 | 44 | |
| Compagnia Gustavo Salvini | Compagnia Gustavo Salvini | 1913 | 2 | |
| Compagnia Palmer - Cimara - Pilotto | Compagnia Palmer - Cimara - Pilotto | 1934 | 7 | |
| Compagnia Italia Vitaliani/ Compagnia Carlo Duse | Compagnia Italia Vitaliani/ Compagnia Carlo Duse | 1898 – 1919 | 9 | |
| Canberra Theatre Trust | Canberra Theatre Trust | 1970 | 1 | |
| Compagnia Teresa Mariani | Compagnia Teresa Mariani | 1910 | 1 | |
| Compagnie Robert Cordier | Compagnie Robert Cordier | 1986 | 2 | |
| Christian Wilhelm Foght Teaterselskab | Wilhelm Foght Teaterselskab (Christian Wilhelm Foght Teaterselskab) | 1878 – 1880 | 12 | |
| Comedia Nacional | Comedia Nacional | 1954 – 2019 | 6 | |
| Compagnia Vitaliani | Compagnia Vitaliani | 1893 | 4 | |
| Cutty Sark Tall Ships’ Race | Cutty Sark Tall Ships’ Race | 2001 | 1 | |
| Chester Theatre Group | Chester Theatre Group | 2002 | 1 | |
| Criterion Independent Theatre | Criterion Independent Theatre | 1897 | 1 | |
| Chiswick Drama Circle | Chiswick Drama Circle | 1956 | 1 | |
| Compagnia Giovanni Emanuel Gatti | Compagnia Giovanni Emanuel Gatti | 1907 | 2 | |
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