| Beijing Gehua CATV Network Co.,Ltd. | Beijing | — | 1 |
| Belarus Free Theatre | — | March 30, 2005 | 1 |
| Believe Pictures | United States | 2003 | 1 |
| Bell Broadcast and New Media Fund | Toronto | 1997 | 1 |
| Bellini Industries | — | — | 1 |
| Bend It Films | London | — | 1 |
| Benecé Produccions | — | — | 1 |
| Benetone Hillin Entertainment | — | 2011 | 1 |
| Bento Box Entertainment | North Hollywood | 2009 | 1 |
| Berliner Ensemble | Theater am Schiffbauerdamm | 1949 | 1 |
| Best Film | — | November 7, 2001 | 1 |
| Bianca Films | Rome | — | 1 |
| Bibury Animation Studios | Mitaka | May 2017 | 1 |
| BIGFlix | Mumbai | 2008 | 1 |
| Bild- und Filmamt | — | 1917 | 1 |
| Bioscop | Prague | 2002 | 1 |
| Bitters End | — | April 22, 1994 | 1 |
| Biz Television | — | 2011 | 1 |
| BKP production | Prague | October 11, 2000 | 1 |
| Blachfilms | — | — | 1 |
| Black Spark Film & TV | — | — | 1 |
| Black Walk | Whitby | 1990 | 1 |
| Blacksmith | Paris | December 20, 2022 | 1 |
| Blast! Films | London | — | 1 |
| Bliss Media Ltd | Shanghai | — | 1 |
| Blizzard Entertainment | Irvine | February 8, 1991 | 1 |
| Blood Ceremony Films | — | — | 1 |
| Bloomberg L.P. | 731 Lexington Avenue | October 1981 | 1 |
| Blu Cinematografica | — | — | 1 |
| Blue Omega | Annapolis | 2003 | 1 |
| Blue-Tongue Films | Sydney | — | 1 |
| Blueming Pictures GmbH | Düsseldorf | December 5, 2024 | 1 |
| BMG Music Publishing | New York City | 1987 | 1 |
| Bobbs-Merrill Company | Indianapolis | 1850 | 1 |
| Boje Buck Produktion | Berlin | — | 1 |
| Bolshoi Theatre | Moscow | March 28, 1776 | 1 |
| Bolívar Films | — | 1940 | 1 |
| Bonjour Pictures | — | — | 1 |
| Bosko Biati Film | Berlin | — | 1 |
| Boulder Media | Dublin | 2000 | 1 |
| Boxoffice International Pictures | Los Angeles | 1950 | 1 |
| Bracan | Cardiff | — | 1 |
| Brasil Paralelo | São Paulo | August 9, 2016 | 1 |
| Brave Man Media | Delray Beach | — | 1 |
| Bren Entertainment | — | February 22, 2000 | 1 |
| Bridgit Folman Film Gang | — | — | 1 |
| Bridie Films | London | — | 1 |
| Brilliant Animation Studios | Taipei | July 10, 1978 | 1 |