| Bridie Films | United Kingdom | — | — | 1 |
| Bright Shining City Productions | — | 2005 | — | 1 |
| Brightburn Entertainment | Philippines | July 10, 2024 | — | 1 |
| Brilliant Animation Studios | Taiwan | July 10, 1978 | July 22, 2016 | 1 |
| Brilliant Films | United Kingdom | September 14, 2005 | — | 1 |
| British Satellite Broadcasting | United Kingdom | 1986 | 1990 | 1 |
| Broadcaster Audiovisual Services | Spain | — | — | 1 |
| Broken Swing Productions | United States | 2010 | — | 1 |
| Broken Wall Films | — | — | — | 1 |
| Broth Film | Germany | — | — | 1 |
| Brown Bag Films | Ireland | 1994 | — | 1 |
| Brownstone Productions | United States | October 16, 2002 | — | 1 |
| Bruce Seven Productions | United States | — | — | 1 |
| Brunswick Corporation | United States | September 15, 1845 | — | 1 |
| BRUZZ | Belgium | March 10, 2014 | — | 1 |
| BTeam Pictures | Spain | 2017 | — | 1 |
| Bubble Comics | Russia | 2011 | — | 1 |
| BUC-FILM | Czech Republic | May 23, 1994 | — | 1 |
| Budapest Scoring Orchestra | Hungary | — | — | 1 |
| Buendía Estudios | Spain | December 4, 2017 | — | 1 |
| Bukalapak | Indonesia | January 10, 2010 | — | 1 |
| Bumi Manusia Foundation | Indonesia | June 2014 | — | 1 |
| Bumilangit | Indonesia | December 8, 2003 | — | 1 |
| Bungeishunjū | Japan | 1923 | — | 1 |
| Bunim/Murray Productions | United States | — | — | 1 |
| Burning Heart Records | Sweden | 1993 | — | 1 |
| BuzzFeed Studios | United States | — | — | 1 |
| BVNG Productions | France | — | — | 1 |
| Bwrdd Ffilmiau Cymraeg | United Kingdom | — | — | 1 |
| By-pass films | Canada | — | — | 1 |
| C More | Sweden | 1997 | — | 1 |
| C-Hundred Film Corporation | United States | 1996 | — | 1 |
| C-JeS Studios | South Korea | 2009 | — | 1 |
| C1R | United States | 1998 | — | 1 |
| C8 | France | October 7, 2012 | March 2025 | 1 |
| Cabine obscura | Canada | — | — | 1 |
| Cactus Jack Records | United States | 2017 | — | 1 |
| Cados Producciones | Spain | — | — | 1 |
| CaixaForum | Spain | 2002 | — | 1 |
| Cal Vista International | United States | — | — | 1 |
| California Motion Picture Corporation | United States | 1911 | 1920 | 1 |
| Calouste Gulbenkian Foundation | Portugal | July 18, 1956 | — | 1 |
| Cameofilm | Hungary | — | — | 1 |
| Camera Cagliostro | Czechoslovakia | 1992 | — | 1 |
| Campania | Italy | 1970 | — | 1 |
| Campus Studios | — | — | — | 1 |
| Canada Trust | Canada | 1864 | — | 1 |
| Canadian Bioscope Company | Canada | 1912 | — | 1 |
| Canadian Film Centre | Canada | 1988 | — | 1 |
| Canadian Television Fund | Canada | 1998 | — | 1 |
| Canal 13 | Chile | August 21, 1959 | — | 1 |
| Canal France International | France | 1989 | — | 1 |
| Canal+ | France | November 14, 1992 | — | 1 |
| Cannon Films Ltd | United Kingdom | 2014 | — | 1 |
| Canopée Production | France | May 28, 2014 | — | 1 |
| Canto Claro Produções Artísticas (Firm) | Brazil | — | — | 1 |
| CANVAS N | South Korea | April 4, 2003 | — | 1 |
| Canção Nova | Brazil | — | — | 1 |
| Capa Productions | United States | — | — | 1 |
| Capi Films | France | 1967 | — | 1 |
| Capri Entertainment | Italy | 2018 | — | 1 |
| Caribara Animation | France | August 2005 | — | 1 |
| Carlton-Film | Germany | — | — | 1 |
| Carousel Productions | — | — | — | 1 |
| Carson Entertainment | United States | 1980 | — | 1 |
| Cartel | — | 2003 | — | 1 |
| Cartoon and puppet film studio Prague | Czechoslovakia | — | — | 1 |
| Casa de Cinema | Brazil | — | — | 1 |
| Casablanca Records | United States | 1973 | — | 1 |
| Castafiore Films | Spain | — | — | 1 |
| Catalan Institute of Finance | Spain | 1985 | — | 1 |
| CB Films | France | — | — | 1 |
| CBC News Network | Canada | July 31, 1989 | — | 1 |
| Cedar Park Entertainment | United States | — | — | 1 |
| Celltrion Entertainment | South Korea | January 4, 2012 | — | 1 |
| Celtic Films | United Kingdom | — | — | 1 |
| Centar FRZ | Yugoslavia | — | — | 1 |
| Centaure Films | Canada | — | — | 1 |
| Center for Asian American Media | United States | 1980 | — | 1 |
| Center for Investigative Reporting | United States | 1977 | — | 1 |
| Center for Kapampángan Studies | Philippines | March 8, 2002 | — | 1 |
| Centrul de Producție Cinematografică București | Romania | — | — | 1 |
| Centrum Film | Norway | 1944 | — | 1 |
| CFS Košutnjak | — | — | — | 1 |
| Chanel | France | 2010 | — | 1 |
| Channel 5 | — | April 6, 2021 | — | 1 |
| Channel Four Television Corporation | United Kingdom | 1982 | — | 1 |
| Chaplin-Mayer Pictures Company | United States | 1920 | — | 1 |
| Charente | France | March 4, 1790 | — | 1 |
| Charles Chaplin Productions | — | — | — | 1 |
| Charles Urban Trading Company | United Kingdom | 1903 | — | 1 |
| Charon Film | Sweden | — | — | 1 |
| Chaska Films | Peru | — | — | 1 |
| Chenault Productions | United States | — | — | 1 |
| Chic Films | France | — | — | 1 |
| Children's Film Foundation | United Kingdom | 1951 | — | 1 |
| Children's Film Unit | United Kingdom | 1981 | 2011 | 1 |
| Chilefilms | Chile | 1942 | — | 1 |
| Chiller | — | 2007 | — | 1 |
| Chiller Films | — | — | — | 1 |