| Centro Cultural de la Cooperación | Centro Cultural de la Cooperación | Argentina, Buenos Aires, Av. Corrientes 1543 | 2006-07-07 | 2012-04-28 | 2006–2011 | 2 | |
| Cagliari | Cagliari | Italy, Cagliari | 1893-03-21 | -- | 1893–1903 | 2 | |
| Comédie-Française (Studio-Théâtre) | Comédie-Française (Studio-Théâtre) | France, Paris, 2 Rue de Richelieu | 1921-06-20 | 2006-04-02 | 1921–2006 | 3 | |
| Cohen Family Studio Theatre, University of Cincinnati College | Cohen Family Studio Theatre, University of Cincinnati College | United States, Cincinnati, 290 CCM Blvd | 2006-04-27 | 2006-04-29 | 2006 | 1 | |
| Cornouaille, Théâtre de | Théâtre de Cornouaille | France, Quimper, 1 Esplanade François Mitterrand | 2013-05-29 | 2018-11-09 | 2013–2018 | 3 | |
| Casa da Gávea | Casa da Gávea | Brazil, Gávea, Praça Santos Dumont, 116 | 1997-05-08 | -- | 1997 | 1 | |
| Comprehensive School | Comprehensive School | Ireland, Glenties | 1980-03-21 | 1980-03-22 | 1980 | 1 | |
| Croydon Repertory Theatre | Croydon Repertory Theatre | England, Croydon, London | 1932-10-17 | -- | 1932–1936 | 4 | |
| Centro Cultural Bertolt Brecht (Sala Tito Junco) | Centro Cultural Bertolt Brecht (Sala Tito Junco) | Cuba, Havana | 2013-11-16 | -- | 2013 | 1 | |
| Château de Noirmoutier | Château de Noirmoutier | France, Noirmoutier-en-l'Île, Place d'Armes | 1972-07-17 | 1972-08-06 | 1972 | 1 | |
| Członkowie Akademickiego Kółka Miłośników Sceny | Członkowie Akademickiego Kółka Miłośników Sceny | Poland, Cieszyn | 1906-06-29 | -- | 1906 | 1 | |
| Close Theatre Club | Close Theatre Club | Scotland, Glasgow | 1968-09-25 | 1968-10-13 | 1968 | 1 | |
| Comète - Scène Nationale de Châlons-en-Champagne, La | La Comète - Scène Nationale de Châlons-en-Champagne | France, Châlons-en-Champagne, 5 Rue des Fripiers | 2012-02-16 | 2012-12-06 | 2012 | 1 | |
| Club Joplin | Club Joplin | United States, Webb City | 1908-10-20 | 1908-10-21 | 1908 | 1 | |
| Československý rozhlas Praha | Československý rozhlas Praha | Czech Republic, Prague | 1953-09-28 | 2012-10-06 | 1953–2012 | 3 | |
| Cable Hall | Cable Hall | United States, Atlanta | 1914-04-02 | 1914-04-02 | 1914 | 1 | |
| Complesso industriale ex-Minganti | Complesso industriale ex-Minganti | Italy, Bologna | 2001-10-18 | 2001-10-29 | 2001 | 1 | |
| Carl Schurz High School | Carl Schurz High School | United States, Chicago, 3601 N Milwaukee Ave | 1928-03-25 | -- | 1928 | 1 | |
| Canada | Canada | Canada | 1952-10-16 | -- | 1952–1978 | 12 | |
| Crescent Theatre | The Crescent Theatre | England, Birmingham, Brindleyplace, Sheepcote St | 1959-04-11 | 2000-11-25 | 1959–2000 | 2 | |
| Český rozhlas (Czech Radio) | Český rozhlas (Czech Radio) | Czech Republic, Brno | 2006-05-23 | 2012-10-20 | 2006 | 1 | |
| Cultuurcentrum de Fabriek | Cultuurcentrum de Fabriek | Belgium, St Lievens Houtem, Fabrieksstraat 19 | 2009-10-24 | -- | 2009 | 1 | |
| CaféTeatret | CaféTeatret | Denmark, Copenhagen, Skindergade 3 | 1988-05-24 | -- | 1988 | 1 | |
| Cultureel Centrum Nova (CC De Poort Wetteren) | Cultureel Centrum Nova (CC De Poort Wetteren) | Belgium, Wetteren, Molenstraat 2/B | 2002-02-18 | 2002-02-19 | 2002 | 1 | |
| China Youth Art Institute | China Youth Art Institute | China, Beijing | -- | -- | | | |
| Corabia | Corabia | Romania, Corabia | -- | -- | | | |
| Československý rozhlas Brno | Československý rozhlas Brno | Czech Republic, Brno | 1956-05-10 | 2012-09-29 | 1956–1968 | 3 | |
| Cuxhaven | Cuxhaven | Germany, Cuxhaven | 2011-04-09 | -- | 2011 | 1 | |
| Catania | Catania | Italy, Catania | 1892-06-23 | 1892-06-28 | 1892–1897 | 2 | |
| Cinema Teatro Odeon | Cinema Teatro Odeon | Italy, Roseto degli Abruzzi Abruzzo, V. Nazionale SNC | 2008-02-22 | -- | 2008 | 1 | |
| Casino-Theater | Casino-Theater | Switzerland, Burgdorf, Kirchbühl 14 | 2008-02-07 | 2016-03-17 | 2008–2019 | 5 | |
| Cultuurcentrum Brugge | Cultuurcentrum Brugge | Belgium, Brugge, Sint-Jakobsstraat 20 | 2007-12-18 | -- | 2007 | 1 | |
| Centro Dramático de Ceuta / Instituto Siete Colinas | Centro Dramático de Ceuta / Instituto Siete Colinas | Spain, Ceuta, Barriada Odonnell | 2010-11-12 | 2010-11-20 | 2010 | 1 | |
| Centre de recherche pour le développement culturel | CRDC (Centre de recherche pour le développement culturel) | France, Nantes | 2000-01-25 | 2000-01-28 | 2000 | 1 | |
| CASA 0101 Theater | CASA 0101 Theater | United States, Los Angeles, 2102 E 1st St | 2017-10-19 | 2017-11-12 | 2017 | 1 | |
| Concord Main Stage | Concord Main Stage | United States, Concord, 1975 Diamond Blvd | 2012-07-23 | 2012-08-18 | 2012 | 1 | |
| Cape Breton Regional Municipality | Cape Breton Regional Municipality | Canada, Nova Scotia | 2000-01-27 | 2000-01-29 | 2000 | 1 | |
| Carré, Scène nationale - Centre d'art contemporain, Le | Le Carré, Scène nationale - Centre d'art contemporain | France, Château-Gontier-sur-Mayenne, 4 bis Rue Horeau | 2012-12-04 | -- | 2012 | 1 | |
| Chateau Neuf Teaterscenen | Chateau Neuf Teaterscenen | Norway, Oslo, Slemdalsveien 15 | 1987-05-06 | 2014-03-29 | 1987–2014 | 3 | |
| Collins Auditorium, Fordham University Theatre | Collins Auditorium, Fordham University Theatre | United States, New York, Rose Hill Campus | 1947-02-11 | 1966-02-12 | 1947–1966 | 2 | |
| Câmpina | Câmpina | Romania, Câmpina | -- | -- | | | |
| Christ's Hospital School | Christ's Hospital School | England, Horsham, Christ's Hospital | 2018-10-08 | -- | 2018 | 1 | |
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