| B's International | Higashiyama | 1990 | 1 |
| B. A. Entertainment | — | — | 1 |
| B.A. Entertainment | — | — | 17 |
 B92 | Belgrade | 1989 | 1 |
| Babe Films | Paris | — | 3 |
 Babelsberg Studio | Potsdam | 1912 | 16 |
| Baby Cow Productions | London | 1999 | 5 |
| Baby Einstein | Atlanta | 1996 | 1 |
| Babyjane Productions | — | — | 1 |
| Babylon'13 | — | 2013 | 1 |
 BAC Films | Paris | 1986 | 10 |
| Backmann & Hoderoff | — | — | 1 |
| Bad Hat Harry Productions | Sony Pictures Studios | 1995 | 4 |
| Bad Monkey | Hyderabad | 2005 | 1 |
 Bad Robot Productions | Santa Monica | 1998 | 21 |
| Bainet Media | Aia, Madrid, Bilbao | 1992 | 2 |
| Baku Media Center | Baku | 2013 | 1 |
| Balaji Motion Pictures | Mumbai | 2002 | 26 |
| Balaji Telefilms | Mumbai | 1994 | 9 |
| Balboa Productions | — | 2018 | 3 |
| Baldur Film | Seltjarnarnes | — | 1 |
| Balet y Blay | Passeig de Gràcia | 1938 | — |
| Baleuko | Durango | 1993 | 8 |
 Bally Sports Midwest | St. Louis | 1989 | — |
| Bally Sports North | Minneapolis | 1986 | — |
 Bally Sports Ohio | Cleveland | 1989 | — |
| Bally Sports Sun | Orlando | 1988 | — |
| Balti Video | Tallinn | 3 February 1995 | 1 |
| Baltic Film Production | Tallinn | 18 May 1998 | 3 |
| Balázs Béla Stúdió | Budapest | 1959 | 2 |
| Bambú Producciones | Pozuelo de Alarcón | 2007 | 3 |
 Bamforth & Co. | Leeds | — | — |
 Bandai | Taitō-ku | 5 July 1950 | 7 |
 Bandai Namco Arts | Tokyo | April 2018 | 2 |
| Bandidos Films | Mexico City | — | 3 |
 Bang Bros | Miami | 2004 | 1 |
 Bangumi | rue Cauchy | 15 June 2011 | — |
 Banijay Entertainment | London | 9 July 2026 | — |
| Banijay Entertainment S.A. | Paris | 2008 | — |
 Banijay Kids & Family | Paris | 14 February 2011 | — |
| Banijay Kids & Family Distribution | — | — | — |
| Banyan Productions | Philadelphia | — | — |
| Baram Pictures | — | — | 1 |
| Barbara Moorse Workshop | Munich | — | 2 |
 Barrandov Studios | Prague | 1931 | 107 |
| Barris Industries | — | 1965 | 3 |
| Barry & Enright Productions | — | 1975 | 2 |
| Barton Films | Bilbao | 1992 | 2 |
| Barunson Studio | — | — | 1 |
| Basement Films | — | 2022 | 1 |
| Basic Pictures | Hong Kong | 2002 | 5 |
 Basque Government | Headquarters of the Basque Government | 1980 | 1 |
| Batabat | Barcelona | — | 1 |
| Batavia Pictures | — | — | 1 |
| Bathysphere productions | 10ᵗʰ arrondissement of Paris | — | 1 |
| Bautafilm | Umeå | 2010 | 1 |
 Bavaria Entertainment | Cologne | 1996 | 1 |
| Bavaria Fiction | Geiselgasteig | 2007 | — |
 Bayerischer Rundfunk | Munich | 1945 | 16 |
| Bazelevs Company | Moscow | 1994 | 43 |
 BBC Cymru Wales | Broadcasting House | 1964 | 3 |
 BBC One | London | 2 November 1936 | 4 |
 BBC Persian Television | Broadcasting House | 2009 | 1 |
 BBC Radio Bristol | — | 1970 | 1 |
 BBC Studios | London | April 2016 | 1 |
 BBC Worldwide | London | 1979 | 2 |
| Beacon Pictures | Tokyo | 1990 | 18 |
 Beate Uhse | Hamburg | 1981 | 1 |
| Bedlam Productions | London | — | 1 |
| Bedna Films | Prague | 13 May 2009 | 1 |
| Bedrock Studios | — | — | 1 |
| Bee Brain | Akasaka | 11 September 1990 | — |
| Behindwoods.com | Chennai | 2004 | — |
| Beijing Enlight Media | Beijing | 1998 | 5 |
| Beijing Enlight Pictures | Beijing | — | 14 |
 Beijing Film Academy | — | 1928 | 3 |
| Beijing Gehua CATV Network Co.,Ltd. | Beijing | — | 1 |
| Bel Air Classiques | Paris | 2004 | 1 |
 Belarus Free Theatre | — | 30 March 2005 | 1 |
 Belarusfilm | Minsk | 1928 | 144 |
 Belgacom 11 | — | — | 1 |
| Bell Broadcast and New Media Fund | Toronto | 1997 | 1 |
 Bellwether Pictures | Los Angeles | 2011 | 2 |
| Bend It Films | London | — | 1 |
| BenderSpink | — | — | 5 |
| Benelux Film Distributors | Ghent | 2006 | 1 |
 Benetone Hillin Entertainment | — | 2011 | 1 |
| Bento Box Entertainment | North Hollywood | 2009 | 1 |
 Berliner Union Film | Berlin | 1963 | — |
| Berolina Film | West Berlin | 1948 | 14 |
| Best Film | — | 7 November 2001 | 1 |
| Beta Fiction Spain | Madrid | 2022 | 1 |
| Beta Film | Oberhaching | 1959 | 5 |
 BeTV | Evere | 2004 | 8 |
| BH Entertainment | — | — | 3 |
| Bharani Pictures | Chennai | — | 5 |
| Bhavya Creations | Jubilee Hills | 2007 | 7 |
| Bianca Film | — | — | 2 |
 Bibury Animation Studios | Mitaka | May 2017 | 1 |
| Bidibul Productions | — | 2009 | 8 |
| Big Bang Entertainments | Kochi | 2015 | 2 |
| Big Bang Media | — | 2009 | — |
| Big Beach | New York City | 2004 | 14 |
| Big Idea Entertainment | Universal City | 1989 | 17 |
| Big Soul Productions | Toronto | 1999 | — |
| Big Talk Studios | London | 1994 | 7 |
| Big Ten Network | Chicago | 30 August 2007 | — |
| Big Things Films | Dublin | 2024 | 1 |
| BigBalls Films | London | 2005 | — |
| Bild- und Filmamt | — | 1917 | 1 |
| Billionfold Inc. | Burbank | 2003 | — |
| BiM Distribuzione | Rome | 1983 | 12 |
| BIND | Amsterdam | — | 1 |
| Biograf Jan Svěrák | Prague | 1994 | 8 |
| Bioscop | Prague | 2002 | 1 |
 Bioware | Edmonton | February 1995 | 1 |
 Bison Film Company | Los Angeles | 1909 | 4 |
| Bitters End | — | 22 April 1994 | 1 |
| Blachfilms | — | — | 1 |
| Black Label Media | — | 2013 | 8 |
| Black Sheep Film Productions | — | 2010 | — |
| Black Spark Film & TV | — | — | 1 |
| Black Walk | Whitby | 1990 | 1 |
| Blackfella Films | Sydney | 1992 | — |
| Blackpills | — | 5 May 2017 | 1 |
| Blacksmith | Paris | 20 December 2022 | 1 |
| Blast! Films | London | — | 1 |
 Blender Foundation | Amsterdam | May 2002 | 2 |
| Blender Institute | Amsterdam | 2007 | 1 |
 Blibli | — | 2010 | 2 |
 Blink | London | 1985 | — |
| Bliss Media Ltd | Shanghai | — | 1 |
| Bloody Disgusting | — | 2001 | 5 |
 Bloomberg L.P. | 731 Lexington Avenue | October 1981 | 1 |
 Blowback Productions | New York City | 1988 | 1 |
| Blu Cinematografica | — | — | 1 |
 Blue Circle | Amsterdam | 2004 | — |
| Blue eyes Fiction | Munich | — | 1 |
| Blue Hills Pictures | Prague | 13 March 2019 | 1 |
 Blueming Pictures GmbH | Düsseldorf | 5 December 2024 | 1 |
 Blumhouse Productions | Los Angeles | 2000 | 92 |
| BMG Music Publishing | New York City | 1987 | 1 |
 BNP Paribas | Paris | 1848 | 2 |
| BoB and Partners Co. Ltd. | Hong Kong | 1995 | 3 |
| Bob Film Sweden | Stockholm | — | 6 |
| BocaBoca | — | 1988 | 2 |
| Boll KG | Bergrheinfeld | 1992 | 10 |
 Bolshoi Theatre | Moscow | 28 March 1776 | 1 |
 Bolívar Films | — | 1940 | 1 |
 Bombay Talkies | Malad | 1934 | 7 |
 Bona Film Group | — | 1999 | 3 |
 Bones | Suginami | October 1998 | 10 |
| Bonfire | — | — | 1 |
| Bonfire Legend | Dallas | 2016 | 3 |
 Bonne Pioche | Paris | 1993 | 9 |
| Boom Cymru TV | Cardiff | 1994 | 2 |
| Booster Project | — | — | 3 |
| Bophana Center | Phnom Penh | 4 December 2006 | 2 |
| Born Free Entertainment | Mumbai | 2011 | 2 |
| Borough Film | — | — | 1 |
| Boréal films | Barcelona | 1916 | 2 |
| Bos Bros. Film & TV Productions | Amsterdam | — | 6 |
| Bosko Biati Film | Berlin | — | 1 |
| Bosna film | Sarajevo | 1947 | 4 |
| Boulevard Films | — | — | 4 |
| Boxoffice International Pictures | Los Angeles | 1950 | 1 |
| Bracan | Cardiff | — | 1 |
| Brainfeeder | Los Angeles | 2008 | 1 |
 Brainpool TV | Mülheim | 28 November 1994 | — |
| Brandtfilm | Kleinmachnow | 1973 | — |
| Brann-film | — | 1953 | 2 |
 Brasil Paralelo | São Paulo | 9 August 2016 | 1 |
| Brave Man Media | Delray Beach | — | 1 |
| Brave New Films | — | — | 2 |
| BRB Internacional | Barcelona | 1972 | — |
| Bren Entertainment | — | 22 February 2000 | 1 |
| Bridgit Folman Film Gang | — | — | 1 |
| Bridie Films | London | — | 1 |
 Brigham Young University | Provo | 10 October 1875 | 2 |
| Bright Shining City Productions | Austin | 2005 | 1 |
| Brightburn Entertainment | — | 10 July 2024 | 1 |
| Brightlight Pictures | Vancouver | 2001 | 10 |
| Brilliant Animation Studios | Taipei | 10 July 1978 | 1 |
| Brilliant Films | — | 14 September 2005 | 1 |
| Brillstein Entertainment Partners | Beverly Hills | 1991 | 5 |
| Bristol Bay Productions | Beverly Hills | 1995 | 4 |
| British and Colonial Films | London | 1909 | 16 |
| British and Dominions Imperial Studios | — | 1929 | 18 |
| British Satellite Broadcasting | Marco Polo House | 1986 | 1 |
| British Screen | London | — | 5 |
| Broadcaster Audiovisual Services | — | — | 1 |
| Broadcasting Authority of Ireland | — | October 2009 | 4 |
| Broken Wall Films | Worcester | — | 1 |
 Bron Studios | British Columbia | 21 September 2010 | 30 |
| Broth Film | Munich | — | 1 |
| Brown Bag Films | Dublin | 1994 | 1 |
| Brownstone Productions | California | 16 October 2002 | 1 |
 Brunswick Corporation | Lake Forest | 15 September 1845 | 1 |
 BRUZZ | — | 10 March 2014 | 1 |
| BUC-FILM | Prague | 23 May 1994 | 1 |
 Buendía Estudios | — | 4 December 2017 | 1 |
 BUF Compagnie | Paris | 1984 | — |
| Buffalo Gal Pictures | — | — | 7 |
| BulBul Film | Sandefjord | — | 2 |
| Bumi Manusia Foundation | Cianjur | June 2014 | 1 |
| Bungeishunjū | Kioichō | 1923 | 1 |
 Bunim/Murray Productions | Los Angeles | — | 1 |
 Burning Angel | New York City | 6 December 2002 | 2 |
 Burning Heart Records | Örebro | 1993 | 1 |
 BuzzFeed | New York, New York City | 2006 | 2 |
| BVNG Productions | — | — | 1 |
| Böcek Yapım | Istanbul | — | 5 |