| Bluebox Limited | Bettendorf | 2001 | 1 |
| Blueming Pictures GmbH | Düsseldorf | December 5, 2024 | 1 |
| BMG Music Publishing | New York City | 1987 | 1 |
| BNN | Hilversum | August 15, 1997 | 1 |
| Bobbs-Merrill Company | Indianapolis | 1850 | 1 |
| Boje Buck Produktion | Berlin | — | 1 |
| Bolshoi Theatre | Moscow | March 28, 1776 | 1 |
| Borough Film | — | — | 1 |
| Boulder Media | Dublin | 2000 | 1 |
| Break Out Pictures | — | — | 1 |
| Bridgit Folman Film Gang | — | — | 1 |
| Bridie Films | London | — | 1 |
| Bright Shining City Productions | Austin | 2005 | 1 |
| Brightburn Entertainment | — | July 10, 2024 | 1 |
| Brilliant Animation Studios | Taipei | July 10, 1978 | 1 |
| Brilliant Films | — | September 14, 2005 | 1 |
| Broadcaster Audiovisual Services | — | — | 1 |
| Broken Swing Productions | San Diego | 2010 | 1 |
| Broken Wall Films | Worcester | — | 1 |
| Broth Film | Munich | — | 1 |
| Brown Bag Films | Dublin | 1994 | 1 |
| Brownstone Productions | California | October 16, 2002 | 1 |
| Bruce Seven Productions | — | — | 1 |
| Brunswick Corporation | Lake Forest | September 15, 1845 | 1 |
| BTeam Pictures | Madrid | 2017 | 1 |
| Bubble Comics | Moscow | 2011 | 1 |
| Buendía Estudios | — | December 4, 2017 | 1 |
| Bumi Manusia Foundation | Cianjur | June 2014 | 1 |
| Bumilangit | Jakarta | December 8, 2003 | 1 |
| Bungeishunjū | Kioichō | 1923 | 1 |
| Burning Heart Records | Örebro | 1993 | 1 |
| BuzzFeed Studios | — | — | 1 |
| By-pass films | Quebec | — | 1 |
| C-Hundred Film Corporation | — | 1996 | 1 |
| C-JeS Studios | Seoul | 2009 | 1 |
| C8 | Boulogne-Billancourt | October 7, 2012 | 1 |
| CaixaForum | — | 2002 | 1 |
| Cal Vista International | — | — | 1 |
| Calouste Gulbenkian Foundation | Calouste Gulbenkian Foundation headquarters | July 18, 1956 | 1 |
| Cameofilm | Budapest | — | 1 |
| Campania | — | 1970 | 1 |
| Canadian Bioscope Company | — | 1912 | 1 |
| Canadian Film Centre | Toronto | 1988 | 1 |
| Canal 13 | Santiago | August 21, 1959 | 1 |
| Canal France International | France | 1989 | 1 |
| Canal+ | Issy-les-Moulineaux | November 14, 1992 | 1 |
| Cannon Films Ltd | Lancaster | 2014 | 1 |
| Canopée Production | Briançon | May 28, 2014 | 1 |