| Cultuurcentrum Temse | Cultuurcentrum Temse | Belgium, Temse, 16-17 Frans Boelplein 1 | 2002-01-16 | 2002-01-18 | 2002 | 1 | |
| Chiesa di San Agostino | Chiesa di San Agostino | Italy, L´Aquila, Abruzzo | 1985-05-14 | 1985-12-01 | 1985 | 1 | |
| Curitiba | Curitiba | Brazil, Curitiba | 2005-04- | 2008-08-03 | 2005–2008 | 2 | |
| Columbia-Greene Community College | Columbia-Greene Community College | United States, Hudson, 4400 NY-23 | 2017-11-10 | 2017-11-12 | 2017 | 1 | |
| Champaign | Champaign | United States, Champaign | 1949-01-14 | 1949-01-15 | 1949 | 1 | |
| Citadel Arts Centre, The | The Citadel Arts Centre | England, Saint Helens, Waterloo St | 2013-09-16 | -- | 2013 | 1 | |
| Cultureel en Congrescentrum van Sint-Pieters-Woluwe | Cultureel en Congrescentrum van Sint-Pieters-Woluwe | Belgium, St-Pieters-Woluwe, Avenue Charles Thielemans 93 | 1999-10-20 | 2007-- | 1999–2007 | 2 | |
| Chateau Neuf Teaterscenen | Chateau Neuf Teaterscenen | Norway, Oslo, Slemdalsveien 15 | 1987-05-06 | 2014-03-29 | 1987–2014 | 3 | |
| Cangas de Morrazo | Cangas de Morrazo | Spain, Cangas de Morrazo | 2010-10-28 | -- | 2010–2011 | 2 | |
| Canadian Theatre School | Canadian Theatre School | Canada, Toronto | 1952-05-14 | -- | 1952 | 1 | |
| Cantabile 2 | Cantabile 2 | Denmark, Stege, Kostervej 2b | 2013-09-23 | -- | 2013 | 1 | |
| Comedy Theatre | Comedy Theatre | England, London, Panton Street | 1960-01-05 | 2001-07-14 | 1960–2001 | 2 | |
| Cultuurcentrum De Herbakker | Cultuurcentrum De Herbakker | Belgium, Eeklo, Pastoor de Nevestraat 10 | 1998-10-22 | -- | 1998–2009 | 3 | |
| Chrzanów | Chrzanów | Poland, Chrzanów | -- | -- | | | |
| Cordes Hall | Cordes Hall | England, Sunninghill, Berkshire, 2 High Street | 2002-05-09 | 2002-05-18 | 2002 | 1 | |
| Centralnoe televidenie | Centralnoe televidenie (Soviet Central Television) | Russia, Moscow | -- | -- | | | |
| Centrál színház | Centrál színház | Hungary, Budapest, Révay u. 18 | 2018-09-23 | -- | 2018 | 1 | |
| Chicago Cultural Center | Chicago Cultural Center | United States, Chicago, 78 E Washington St | 2009-04-18 | 2009-05-11 | 2009 | 1 | |
| Christ's Hospital School | Christ's Hospital School | England, Horsham, Christ's Hospital | 2018-10-08 | -- | 2018 | 1 | |
| Centro cultural Comfamar | Centro cultural Comfamar | Colombia, Buenaventura, Valle del Cauca | 2009-08-07 | -- | 2009 | 1 | |
| Cultuurcentrum 't Vondel | Cultuurcentrum 't Vondel | Belgium, Halle, J. Possozplein 40 | 2002-02-26 | 2002-02-26 | 2002 | 1 | |
| Carlton Courthouse | Carlton Courthouse | Australia, Carlton, 349 Drummond St | 2001-09-24 | 2001-09-25 | 2001 | 1 | |
| Classic Stage Company | Classic Stage Company | United States, New York, 136 E 13th St | 1981-11-08 | 2016-06-27 | 1981–2016 | 7 | |
| Centro Cultural Nicolás Salmerón | Centro Cultural Nicolás Salmerón | Spain, Madrid, Calle Mantuano, 51 | 2017-11-20 | -- | 2017 | 1 | |
| Communication University of China | Communication University of China | China, Beijing, 1 Dingfuzhuang E St, Chaoyang Qu, Beijing Shi, China | 2016-05-26 | -- | 2016 | 1 | |
| CC Den Blank | CC Den Blank (Cultuurcentrum Den Blank) | Belgium, Overijse, Begijnhof 11 | 2006-12-05 | -- | 2006 | 1 | |
| 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 | |
| Curtis High School | Curtis High School | United States, Staten Island, 105 Hamilton Ave | 2006-10-03 | -- | 2006 | 1 | |
| Cutler Majestic Theatre | Cutler Majestic Theatre | United States, Boston, 219 Tremont Street | 1908-04-13 | 2011-11-06 | 1908–2011 | 2 | |
| Colonial Theatre | Colonial Theatre | United States, Connellsville | 1904-04-21 | 1904-04-21 | 1904 | 1 | |
| Chai Skalli | Chai Skalli | France, Sète | 2013-01-29 | 2013-01-30 | 2013 | 1 | |
| Chopin Theatre | Chopin Theatre | United States, Chicago, 1543 West Division Street | 2004-04-22 | 2004-05-30 | 2004 | 1 | |
| Cultuurcentrum Belgica | Cultuurcentrum Belgica | Belgium, Dendermonde, Kerkstraat 24 | 1998-11-26 | -- | 1998 | 1 | |
| Comédie de Béthune | Comédie de Béthune | France | 2010-11-30 | 2010-12-10 | 2010 | 1 | |
| Canal House | Canal House | England, Oxford, Bulwarks Ln | 2014-03-29 | 2014-03-30 | 2014 | 1 | |
| Casino | Casino | Denmark, Slagelse | 1907-12-11 | -- | 1907 | 2 | |
| Criterion Center Stage Right | Criterion Center Stage Right | United States, New York, 1530 Broadway | 1994-06-01 | 1994-08-07 | 1994 | 1 | |
| Centro Cultural Manzana de la Rivera / Sala García Lorca | Centro Cultural Manzana de la Rivera / Sala García Lorca | Paraguay, Asunción, Ayolas 129 c/ Benjamín Constant | 2019-12-17 | 2019-12-18 | 2019–2020 | 2 | |
| Community Arts Centre | Community Arts Centre | Ireland, Mountmellick | 2007-03-21 | -- | 2007 | 1 | |
| Centrul Cultural Județean Călărași | Centrul Cultural Județean Călărași | Romania, Călărași, Strada 1 Decembrie 1918 | 2015-12-08 | -- | 2015 | 1 | |
| City School Auditorium | City School Auditorium | United States, Monroe | 1914-03-12 | 1914-03-12 | 1914 | 1 | |
| Centro Cultural NorteSur | Centro Cultural NorteSur | Chile, Santiago, Guard Riquelme 226. | 2006-11-16 | 2006-12-09 | 2006 | 1 | |
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