| China Children's Film Studio | — | — | — | 1 |
| China Film Studio | Taiwan | 1933 | 1995 | 1 |
| China Media Capital | People's Republic of China | November 11, 2008 | — | 1 |
| China Organ Harvest Research Center | United States | April 18, 2017 | — | 1 |
| China Southern Airlines | People's Republic of China | 1991 | — | 1 |
| Christian Frei Filmproductions GmbH | Switzerland | — | — | 1 |
| Christie Film Company | United States | 1916 | — | 1 |
| Christmas Films | Russia | 1989 | — | 1 |
| Chuck E. Cheese | United States | May 17, 1977 | — | 1 |
| CHUM Limited | — | 1945 | 2007 | 1 |
| Chung Yuen Motion Picture | British Hong Kong | 1981 | 1982 | 1 |
| Cine Art Productions | — | — | — | 1 |
| Cine+ | Greece | — | — | 1 |
| Cine-Action Inc. | Canada | — | — | 1 |
| Cine-Qua-Non | Sweden | — | — | 1 |
| Cinecom Pictures | United States | 1982 | 1991 | 1 |
| Cinedistri | Brazil | — | — | 1 |
| Cineflix | — | 2002 | — | 1 |
| Cinelou Films | — | — | — | 1 |
| Cinema Art Pvt. Ltd. | Nepal | — | — | 1 |
| Cinema Fantasma | Mexico | — | — | 1 |
| Cinema One | Philippines | 1994 | — | 1 |
| Cinemassacre Productions | United States | 2004 | — | 1 |
| Cinemax | — | — | — | 1 |
| Cinemex | Mexico | 1995 | — | 1 |
| CineNomad | Germany | — | — | 1 |
| Cineplex Entertainment | Canada | 1999 | — | 1 |
| Cinepost Studios | Sweden | September 18, 2006 | March 12, 2018 | 1 |
| Cineproduzione Emo Bistolfi | Italy | — | — | 1 |
| Cinesite Animation | Canada | — | — | 1 |
| Cinet Oy | Finland | — | — | 1 |
| Cinevilla Studio | Latvia | July 22, 2003 | — | 1 |
| Cineyug | — | 1997 | — | 1 |
| Cinquième Maison | Canada | — | — | 1 |
| Ciné Manufacture | France | February 14, 1994 | — | 1 |
| Ciné qua non | France | — | — | 1 |
| Cinéfondation | France | 1998 | — | 1 |
| Cinépolis | Mexico | 1971 | — | 1 |
| Circe Films | Netherlands | — | — | 1 |
| Citadel Entertainment | United States | 1988 | — | 1 |
| Citizens Commission on Human Rights | United States | 1969 | — | 1 |
| Citizens United | United States | 1988 | — | 1 |
| Citizens United Productions | United States | — | — | 1 |
| CITY-DT | Canada | September 28, 1972 | — | 1 |
| CJ ENM | South Korea | December 16, 1994 | — | 1 |
| CJ ENM Studios | South Korea | — | — | 1 |
| CL Productions | Greece | 1998 | — | 1 |
| Claro | — | 2003 | — | 1 |
| Clasa Films Mundiales | Mexico | — | — | 1 |
| Clasikaletet | Israel | 1987 | — | 1 |
| Clean Slate Films | — | October 2014 | — | 1 |
| Cloak & Co. | United States | — | — | 1 |
| Clockwork Pictures | United Kingdom | — | — | 1 |
| Closer Media | United States | 2022 | — | 1 |
| Closer Productions | Australia | 2010 | — | 1 |
| ClubJenna | United States | 2000 | — | 1 |
| CMO | Colombia | 1999 | — | 1 |
| CO Production | Turkey | — | — | 1 |
| CO.Film | Sweden | — | — | 1 |
| CockyBoys | United States | 2007 | — | 1 |
| Cogitoworks | Japan | January 10, 2008 | — | 1 |
| Coimisiún na Meán | Ireland | March 15, 2023 | — | 1 |
| Colombian Institute of Culture | Colombia | — | — | 1 |
| Columbia Pictures Television | United States | May 6, 1974 | 2001 | 1 |
| Comedy Central | United States | April 1991 | — | 1 |
| Comedy Partners | United States | — | — | 1 |
| Comic Strip Production | — | 1992 | — | 1 |
| Comix Wave | Japan | 1997 | March 30, 2007 | 1 |
| Common Room Productions | Australia | — | — | 1 |
| Commonwealth Film Laboratories | Australia | — | — | 1 |
| Compagnie des Phares et Balises | France | 1992 | — | 1 |
| Compagnie Éric Rohmer | France | — | — | 1 |
| Companhia Cinematográfica Vera Cruz | Brazil | — | — | 1 |
| Company of Wolves | United Kingdom | — | — | 1 |
| Compass Light | — | 1985 | — | 1 |
| Complete Index to World Film | — | 2004 | — | 1 |
| Connaissance Films | United States | — | — | 1 |
| Conseil des arts et des lettres du Québec | Canada | 1994 | — | 1 |
| Consolidated Film Industries | — | 1914 | 2008 | 1 |
| Conspiracy Entertainment | United States | 1997 | — | 1 |
| Constance Talmadge Film Company | United States | — | — | 1 |
| Constellation Productions | France | — | — | 1 |
| Contact Films | Australia | — | — | 1 |
| Content Providers | Estonia | — | — | 1 |
| Continental Company | United States | — | — | 1 |
| Contracosta Produções | Portugal | 1993 | — | 1 |
| Corinthia Regional Unit | Greece | — | — | 1 |
| Corner Films | Morocco | — | — | 1 |
| CosmoKino | Belgium | — | — | 1 |
| Cosmopolitan Television | Spain | — | — | 1 |
| Counihan-Villiers Films | United Kingdom | — | — | 1 |
| Cowboy Films | United Kingdom | — | — | 1 |
| Creado Film | Germany | — | — | 1 |
| Creandus Films | Spain | — | — | 1 |
| Creative Capital | United States | 1999 | — | 1 |
| Creative England | United Kingdom | 2011 | — | 1 |
| Creative Europe | Belgium | 2012 | — | 1 |
| Creative Motion | Italy | 2016 | — | 1 |
| Creative Power Entertaining | People's Republic of China | October 21, 2004 | — | 1 |
| Credit Agricole Group | France | 2000 | — | 1 |