| City Lights Theater Company | City Lights Theater Company | United States of America, San Jose, 529 S Second St | 2013-03-21 | 2024-02-18 | 2013–2024 | 2 | |
| Conservatório Nacional de Teatro | Conservatório Nacional de Teatro | Portugal, Lisbon | 1928-03-20 | -- | 1928 | 3 | |
| College Community Center Theatre | College Community Center Theatre | United States of America, Baltimore | 2013-10-17 | 2013-10-22 | 2013 | 1 | |
| Centro Cultural e Congressos de Caldas da Rainha | Centro Cultural e Congressos de Caldas da Rainha | Portugal, Caldas da Rainha, R. Dr. Leonel Sotto Mayor | 2009-08-21 | 2009-08-22 | 2009 | 1 | |
| CC De Woeker | CC De Woeker | Belgium, Oudenaarde, Woeker 3 | 2002-02-21 | 2007-- | 2002–2007 | 2 | |
| Clark Theatre, Dillingham Center | Clark Theatre, Dillingham Center | United States of America, Ithaca, 953 Danby Rd | 2007-10-02 | 2007-10-07 | 2007 | 1 | |
| Csiky Gergely Állami Magyar Színház | Csiky Gergely Állami Magyar Színház | Romania, Timişoara, Str. Alba Iulia, nr. 2. | 1987-04-19 | 2013-03-05 | 1987–2013 | 5 | |
| Centraal Theater | Centraal Theater | Netherlands, Amsterdam, Amstelstraat 14-18 | 1956-10-09 | -- | 1956–1957 | 2 | |
| Cornell University Theatre | Cornell University Theatre | United States of America, Ithaca, 430 College Avenue | 1909-04-02 | 1971-03-13 | 1909–1974 | 8 | |
| Canberra | Canberra | Australia, Canberra | -- | -- | | | |
| Cool | Cool | Netherlands, Heerhugowaard, Coolplein 1 | 2009-11-13 | -- | 2009 | 1 | |
| College Auditorium at Oklahoma A. and M. College | College Auditorium at Oklahoma A. and M. College | United States of America, Stillwater | 1920-03-25 | -- | 1920 | 2 | |
| CC De Ster | CC De Ster | Belgium, Willebroek, Pastorijstraat 1 | 2002-03-22 | 2002-03-22 | 2002 | 1 | |
| Comédie de Valence | Comédie de Valence | France, Valence, Place Charles Huguenel | 2007-03-07 | 2016-01-21 | 2007–2016 | 4 | |
| Cuina, La | La Cuina | Spain, Barcelona | 1993-11-05 | 1993-11-21 | 1993 | 1 | |
| Centro Ágora | Centro Ágora | Spain, A Coruña, Lugar da, Av. Gramela, 17 | 2017-11-30 | 2018-03-15 | 2017 | 1 | |
| Corrosia | Corrosia | Netherlands, Almere, Markt 43 | 2016-03-22 | -- | 2016–2017 | 2 | |
| Christchurch Studio Theatre | Christchurch Studio Theatre | England, London | 1951-03-06 | 1951-03-11 | 1951 | 1 | |
| Casino Du Brassus | Casino Du Brassus | Switzerland, Le Chenit, Route de France 2 | 2018-11-25 | -- | 2018 | 1 | |
| Charter Theatre | Charter Theatre | England, Preston, Guild Hall, Lancaster Rd | 2011-04-15 | 2011-04-16 | 2011 | 1 | |
| Centrál színház | Centrál színház | Hungary, Budapest, Révay u. 18 | 2018-09-23 | -- | 2018 | 1 | |
| Connaught Theatre | Connaught Theatre | England, Worthing, West Sussex, 3 Union Place | 1994-03-08 | 2014-09-25 | 1994–2014 | 3 | |
| City Lit (John Lyons Hall) | City Lit (John Lyons Hall) | England, London, Keeley Street Covent Garden | 2008-07-12 | 2008-07-27 | 2008 | 1 | |
| Centr imeni Vsevoloda Mejerhol'da | Centr imeni Vsevoloda Mejerhol'da (Centre) | Russia, Moscow, Novoslobodskaya St., 23 | 2005-09-11 | -- | 2005 | 1 | |
| Cellar Stage Theater | Cellar Stage Theater | United States of America, Northfield | 1972-02-11 | 1972-02-19 | 1972 | 1 | |
| Cercle d'Emulation | Cercle d'Emulation | Belgium, Liège | 1893-12- | -- | 1893 | 1 | |
| Comédie Nation | Comédie Nation | France, Paris, 77 Rue de Montreuil | -- | -- | | | |
| Classical Theatre Company | Classical Theatre Company | United States of America, Houston, 4617 Montrose Blvd | 2016-02-03 | 2016-02-21 | 2016 | 1 | |
| Compania Mărioara Voiculescu-Bulandra | Compania Mărioara Voiculescu-Bulandra | Romania, Bucharest | 1916-01-13 | -- | 1916 | 1 | |
| Central City Opera House | Central City Opera House | United States of America, Denver, 124 Eureka Street, Central City | 1937-07-17 | 1937-08-07 | 1937 | 1 | |
| Commercial Club Assembly Hall | Commercial Club Assembly Hall | United States of America, Hood River | 1910-09-14 | 1910-09-14 | 1910 | 1 | |
| Centre Dramatique National Besançon Franche-Comté | Centre Dramatique National Besançon Franche-Comté | France, Besançon, Avenue Edouard Droz Esplanade Jean-Luc Lagarce | 2007-01-17 | 2008-05-18 | 2007–2008 | 2 | |
| Cumbernauld Theatre | Cumbernauld Theatre | Scotland, Cumbernauld, Kildrum | 2015-06-19 | 2015-06-20 | 2015 | 1 | |
| Chicago | Chicago | United States of America, Chicago | 1887-05-15 | 1978-12-24 | 1887–1978 | 7 | |
| CC Hof Ter Straeten | CC Hof Ter Straeten (Cultuurcentrum Hof Ter Straeten) | Belgium, Varsenare, Hof van Straeten 1 | 2006-12-08 | -- | 2006 | 1 | |
| Canal House | Canal House | England, Oxford, Bulwarks Ln | 2014-03-29 | 2014-03-30 | 2014 | 1 | |
| Chicago Theatre | Chicago Theatre | United States of America, Chicago | 1891-- | 1891-- | 1891 | 1 | |
| Cultuurcentrum Gildhof | Cultuurcentrum Gildhof | Belgium, Tielt, Sint-Michielstraat 9 | 1994-03-30 | -- | 1994–1998 | 3 | |
| Claustro de San Augustin | Claustro de San Augustin | Spain, Malaga, Calle San Agustín | 1991-07-24 | -- | 1991 | 1 | |
| Comédie de Béthune, La | La Comédie de Béthune | France, Béthune, 138 Rue du 11 Novembre | 2010-11-30 | 2010-12-10 | 2010 | 1 | |
| Civic Repertory Theatre | Civic Repertory Theatre | United States of America, New York, 107 W. 14th St. (Sixth Ave) | 1926-11-01 | -- | 1926–1928 | 3 | |
| Compagnietheater | Compagnietheater | Netherlands, Amsterdam, Kloveniersburgwal 50 | 2008-01-22 | 2008-03-28 | 2008 | 1 | |
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