| B Production | Slovakia | May 18, 2019 | — | 1 |
| B's International | Japan | 1990 | — | 1 |
| B-Reel | — | 1999 | — | 3 |
| B-Reel Films | Sweden | — | — | 5 |
| B. A. Entertainment | South Korea | — | — | 1 |
| B.A. Entertainment | South Korea | — | — | 17 |
| B62 Studios | India | 2021 | — | 1 |
| B92 | Serbia | 1989 | — | 1 |
| Babe Films | France | — | — | 3 |
| Babel Label | Japan | 2010 | — | 1 |
| Babelsberg Film GmbH | Germany | — | — | 3 |
| Babelsberg Studio | Germany | 1912 | — | 16 |
| Baby Cow Productions | United Kingdom | 1999 | — | 5 |
| Baby Einstein | — | 1996 | — | 1 |
| Babyjane Productions | Ireland | — | — | 1 |
| Babylon'13 | Ukraine | 2013 | — | 1 |
| BAC Films | France | 1986 | — | 10 |
| Backmann & Hoderoff | Finland | — | — | 1 |
| Bad Hat Harry Productions | United States | 1995 | — | 4 |
| Bad Monkey | India | 2005 | — | 1 |
| Bad Robot Productions | United States | 1998 | — | 21 |
| Bad Wolf | Wales | 2015 | — | — |
| Bagdasarian Productions | United States | 1981 | — | 5 |
| Bainet Media | Spain | 1992 | — | 2 |
| Baku Media Center | Azerbaijan | 2013 | — | 1 |
| Balaji Motion Pictures | India | 2002 | — | 26 |
| Balaji Telefilms | India | 1994 | — | 9 |
| Balance Media Entertainment | Spain | — | — | 1 |
| Balboa 2 | Denmark | 1997 | January 24, 2008 | 1 |
| Balboa Amusement Producing Company | United States | 1913 | 1918 | 26 |
| Balboa Productions | United States | 2018 | — | 3 |
| BALDR Film | Netherlands | — | — | 2 |
| Baldur Film | Iceland | — | — | 1 |
| Balet y Blay | Spain | 1938 | — | — |
| Baleuko | — | 1993 | — | 8 |
| Bally Sports | United States | March 31, 2021 | — | — |
| Bally Sports Midwest | United States | 1989 | — | — |
| Bally Sports North | United States | 1986 | — | — |
| Bally Sports Ohio | United States | 1989 | — | — |
| Bally Sports Sun | United States | 1988 | — | — |
| Bally Sports Wisconsin | United States | 2007 | — | — |
| Balti Video | Estonia | February 3, 1995 | — | 1 |
| Baltic Film Production | Estonia | May 18, 1998 | — | 3 |
| Balázs Béla Stúdió | Hungary | 1959 | 2010 | 2 |
| Bambú Producciones | Spain | 2007 | — | 3 |
| Bamforth & Co. | United Kingdom | — | — | — |
| Bandai | Japan | July 5, 1950 | 2005 | 7 |
| Bandai Namco Arts | Japan | April 2018 | — | 2 |
| Bandai Namco Entertainment | Japan | March 31, 2006 | — | 1 |
| Bandai Namco Filmworks | Japan | September 1972 | — | 3 |
| Bandidos Films | Mexico | — | — | 3 |
| BandLab Technologies | Singapore | — | — | 1 |
| Bang Bros | United States | 2004 | — | 1 |
| Bang Zoom! Entertainment | United States | 1993 | — | 1 |
| Bang! | United States | — | — | 1 |
| Banger Films, Inc | Canada | 2004 | — | 2 |
| Bangladesh Film Development Corporation | Bangladesh | 1959 | — | 6 |
| Bangumi | France | June 15, 2011 | — | — |
| Banijay Entertainment | United Kingdom | July 9, 2026 | — | — |
| Banijay Entertainment S.A. | France | 2008 | July 9, 2026 | — |
| Banijay Finland | Finland | — | — | 6 |
| Banijay Kids & Family | United Kingdom | February 14, 2011 | — | — |
| Banijay Kids & Family Distribution | United Kingdom | — | — | — |
| Banijay Nordics | — | — | — | 1 |
| Banijay Studios Italy | Italy | 2018 | — | — |
| Banijay UK | United Kingdom | 1994 | — | — |
| Bankable Productions | United States | — | — | 1 |
| Banyan Productions | United States | — | — | — |
| Baozou | People's Republic of China | 2008 | — | 1 |
| Baram Pictures | South Korea | — | — | 1 |
| Baram Pictures Corp. | South Korea | February 16, 2017 | — | — |
| Barbara Moorse Workshop | Germany | — | — | 2 |
| Barber-Birnbaum | United States | — | — | 1 |
| Barcelona City Council | Spain | — | — | 2 |
| Barcinógrafo | Spain | 1913 | 1918 | 1 |
| Bardel Entertainment | Canada | 1987 | — | 4 |
| Barefoot Films | Germany | 2004 | — | 1 |
| Barentsfilm | Norway | — | — | 3 |
| Barrandov Film Studio | Czechoslovakia | 1957 | February 8, 1995 | 52 |
| Barrandov Studios | Czech Republic | 1931 | — | 107 |
| Barret Cooperativa | Spain | 2008 | — | 1 |
| Barris Industries | United States | 1965 | — | 3 |
| Barry & Enright Productions | United States | 1975 | — | 2 |
| Barry Sonnenfeld/Josephson | United States | — | — | 2 |
| Barré Studio | United States | 1914 | — | 1 |
| Barton Films | Spain | 1992 | — | 2 |
| Barunson E&A | South Korea | December 20, 1996 | — | 21 |
| Barunson Studio | South Korea | — | — | 1 |
| Base FX | — | 2006 | — | 1 |
| Basement Films | United Kingdom | 2022 | — | 1 |
| Basic Cinematografica | Italy | — | — | 1 |
| Basic Pictures | People's Republic of China | 2002 | — | 5 |
| Basque Government | Spain | 1980 | — | 1 |
| Batabat | Spain | — | — | 1 |
| Batavia Pictures | Indonesia | — | — | 1 |
| Bathysphere productions | France | — | — | 1 |
| Batjac Productions | United States | 1956 | — | 14 |
| Bautafilm | Sweden | 2010 | — | 1 |
| Bavaria Entertainment | Germany | 1996 | — | 1 |
| Bavaria Fiction | Germany | 2007 | — | — |
| Bavaria Film | Germany | 1919 | — | 70 |
| Bavaria-Filmkunst | Germany | — | — | 1 |
| Baya Films | Algeria | — | — | 1 |
| Bayerischer Rundfunk | Germany | 1945 | — | 16 |
| Bazelevs Company | Russia | 1994 | — | 43 |
| Bazmark | — | 1997 | — | 4 |
| Baš Čelik Film House | Serbia | — | — | 1 |
| BBC Cymru Wales | United Kingdom | 1964 | — | 3 |
| BBC Earth | United Kingdom | 2015 | — | 1 |
| BBC Film | United Kingdom | 1990 | — | 129 |
| BBC Four | United Kingdom | 2002 | — | 1 |
| BBC Natural History Unit | United Kingdom | 1957 | — | 3 |
| BBC One | United Kingdom | November 2, 1936 | — | 4 |
| BBC Persian Television | Afghanistan | 2009 | — | 1 |
| BBC Radio Bristol | United Kingdom | 1970 | — | 1 |
| BBC Scotland | United Kingdom | 1992 | — | 2 |
| BBC Studios | United Kingdom | April 2016 | — | 1 |
| BBC Television | United Kingdom | 1927 | — | 2 |
| BBC Two | United Kingdom | April 20, 1964 | — | 1 |
| BBC Worldwide | United Kingdom | 1979 | April 2018 | 2 |
| BE-TV | Colombia | 2008 | — | 1 |
| Beacon Pictures | United States | 1990 | — | 18 |
| Beate Uhse | Germany | 1981 | — | 1 |
| Beatrice Film | Italy | — | — | 1 |
| Becker Entertainment | Australia | 1965 | — | 1 |
| Bedford Falls Productions | United States | 1985 | — | 7 |
| Bedlam Productions | — | — | — | 1 |
| Bedna Films | Czech Republic | May 13, 2009 | — | 1 |
| Bedrock Studios | United States | — | — | 1 |
| Bee Brain | Japan | September 11, 1990 | — | — |
| Bee Train | Japan | 1997 | — | 1 |
| Bee Vine Pictures | Japan | 2007 | 2008 | 1 |
| Behindwoods | India | 2004 | — | 1 |
| Behindwoods.com | India | 2004 | — | — |
| Beijing Enlight Media | People's Republic of China | 1998 | — | 5 |
| Beijing Enlight Pictures | People's Republic of China | — | — | 14 |
| Beijing Film Academy | People's Republic of China | 1928 | — | 3 |
| Beijing Film Studio | People's Republic of China | 1949 | — | 40 |
| Beijing Gehua CATV Network Co.,Ltd. | People's Republic of China | — | — | 1 |
| Bel Air Classiques | France | 2004 | — | 1 |
| Bel Ami | Slovakia | 1993 | — | — |
| Belarus Free Theatre | United Kingdom | March 30, 2005 | — | 1 |
| Belarusfilm | Belarus | 1928 | — | 144 |
| Belga Films | Belgium | 1937 | February 12, 2026 | — |
| Belga Productions | Belgium | — | — | 3 |
| Belgacom 11 | Belgium | — | — | 1 |
| Belgian Radio and Television Broadcasting | Belgium | May 18, 1960 | April 16, 1997 | 2 |
| Believe Pictures | — | 2003 | — | 1 |
| Bell Broadcast and New Media Fund | Canada | 1997 | — | 1 |
| Bell Media | Canada | 2001 | — | 1 |
| Bellini Industries | United States | — | — | 1 |
| Bellman Productions | France | 1997 | December 7, 2011 | — |
| Bellwether Pictures | United States | 2011 | — | 2 |
| Belsat | Poland | 2007 | — | 9 |
| Belvision Studios | Belgium | 1956 | — | 4 |
| Bend It Films | United Kingdom | — | — | 1 |
| BenderSpink | United States | — | — | 5 |
| Benecé Produccions | Spain | — | — | 1 |
| Benelux Film Distributors | Belgium | 2006 | June 4, 2019 | 1 |
| Benetone Hillin Entertainment | United States | 2011 | — | 1 |
| Bent Image Lab | United States | 2002 | — | — |
| Bento Box Entertainment | United States | 2009 | — | 1 |
| Berlanti Productions | United States | — | — | 3 |
| Berlin-Film | Nazi Germany | 1941 | 1945 | — |
| Berliner Ensemble | Germany | 1949 | — | 1 |
| Berliner Union Film | Germany | 1963 | — | — |
| Berolina Film | Germany | 1948 | 1964 | 14 |
| Best Brains | — | 1988 | — | 1 |
| Best Film | Poland | November 7, 2001 | — | 1 |
| BET | United States | July 1983 | — | 2 |
| Beta Fiction Spain | Spain | 2022 | — | 1 |
| Beta Film | Germany | 1959 | — | 5 |
| BeTV | Belgium | 2004 | — | 8 |
| Bez Buslou Arts | Belarus | 2012 | — | 3 |
| Beşiktaş Kültür Merkezi | Turkey | November 11, 1994 | — | 4 |
| BFI Production Board | — | — | — | 1 |
| BH Entertainment | South Korea | — | — | 3 |
| Bhagirathi Films | India | 2015 | — | — |
| Bharani Pictures | — | — | — | 5 |
| Bhavya Creations | — | 2007 | — | 7 |
| Bianca Film | Italy | — | — | 2 |
| Bianca Films | Italy | — | — | 1 |
| Bibury Animation Studios | Japan | May 2017 | — | 1 |
| Bidel Irania | Iran | 2011 | — | 3 |
| Bidibul Productions | Luxembourg | 2009 | — | 8 |
| Big Bang Entertainments | India | 2015 | — | 2 |
| Big Bang Media | Spain | 2009 | — | — |
| Big Beach | United States | 2004 | — | 14 |
| Big Box Series | India | 2023 | — | 3 |
| Big Idea Entertainment | — | 1989 | — | 17 |
| Big Soul Productions | Canada | 1999 | — | — |
| Big Talk Studios | United Kingdom | 1994 | — | 7 |
| Big Ten Network | United States | August 30, 2007 | — | — |
| Big Things Films | Ireland | 2024 | — | 1 |
| Big Ticket Entertainment | United States | 1994 | — | — |
| BigBalls Films | United Kingdom | 2005 | — | — |
| BIGFlix | India | 2008 | — | 1 |
| Bild- und Filmamt | Germany | 1917 | — | 1 |
| Billionfold Inc. | United States | 2003 | — | — |
| BiM Distribuzione | Italy | 1983 | — | 12 |
| BIND | Netherlands | — | — | 1 |
| Biograf Jan Svěrák | Czech Republic | 1994 | — | 8 |
| Biograph Company | United States | December 1895 | October 1915 | 61 |
| Bioscop | Czech Republic | 2002 | — | 1 |
| Bioskop Film | Germany | — | — | 3 |
| Bioware | Canada | February 1995 | October 21, 2026 | 1 |
| Bir Film | Turkey | 2002 | — | 1 |
| Bison Film Company | United States | 1909 | 1917 | 4 |
| Bitters End | Japan | April 22, 1994 | — | 1 |
| Biz Television | United States | 2011 | — | 1 |
| BKM Film | Turkey | — | — | 4 |
| BKP production | Czech Republic | October 11, 2000 | — | 1 |
| Blachfilms | Canada | — | — | 1 |
| Black Bear Pictures | United States | 2011 | — | 22 |
| Black Box Foundation | Hungary | 1988 | — | — |
| Black Camel Pictures | United Kingdom | — | — | — |
| Black Label Media | United States | 2013 | — | 8 |
| Black Lion Pictures | Finland | March 28, 2012 | December 20, 2024 | 1 |
| Black Orange | Greece | November 2005 | — | 2 |
| Black Sheep Film Productions | Israel | 2010 | — | — |
| Black Spark Film & TV | Sweden | — | — | 1 |
| Black Star | Russia | 2006 | — | — |
| Black Walk | — | 1990 | — | 1 |
| Blackfella Films | Australia | 1992 | — | — |
| Blackpills | France | May 5, 2017 | — | 1 |
| Blacksmith | France | December 20, 2022 | — | 1 |
| Blagbuster Production | France | 2009 | — | 2 |
| Blair Entertainment | United States | 1970 | 1992 | — |
| Blankface | Finland | — | — | 1 |
| Blast! Films | United Kingdom | — | — | 1 |
| Blender Foundation | Netherlands | May 2002 | — | 2 |
| Blender Institute | Netherlands | 2007 | — | 1 |
| Blibli | Indonesia | 2010 | — | 2 |
| Blim TV | Mexico | February 22, 2016 | — | — |
| Blind Spot Pictures | Finland | 1997 | December 7, 2020 | 4 |
| Blinding Edge Pictures | United States | 1999 | — | 16 |
| Blink | United Kingdom | 1985 | — | — |
| Bliss Media Ltd | — | — | — | 1 |
| Blizzard Entertainment | United States | February 8, 1991 | — | 1 |
| Block 2 Distribution | People's Republic of China | 1994 | — | 1 |
| Blondie Girl Productions | United States | — | — | 1 |
| Blood Ceremony Films | Finland | — | — | 1 |
| Bloody Disgusting | — | 2001 | — | 5 |
| Bloody Mary Production | France | — | — | 1 |
| Bloomberg L.P. | United States | October 1981 | — | 1 |
| Blowback Productions | United States | 1988 | — | 1 |
| Blu Cinematografica | Italy | — | — | 1 |
| Blue Circle | Netherlands | 2004 | — | — |
| Blue eyes Fiction | Germany | — | — | 1 |
| Blue Hills Pictures | Czech Republic | March 13, 2019 | — | 1 |
| Blue Omega | United States | 2003 | June 26, 2009 | 1 |
| Blue Sky Studios | United States | February 22, 1987 | April 7, 2021 | 18 |
| Blue-Tongue Films | — | — | — | 1 |
| Bluebird Film Company | British Hong Kong | 1979 | — | 2 |
| Bluebird Photoplays Inc. | United States | 1916 | — | 4 |
| Bluebox Limited | — | 2001 | — | 1 |
| Blueeyes Productions | Iceland | — | — | 4 |
| Blueming Pictures GmbH | — | December 5, 2024 | — | 1 |
| Blumhouse Productions | United States | 2000 | — | 92 |
| Blur Studio | United States | 1995 | — | 3 |
| Bluverde Filmproduktion | Germany | — | — | — |
| BMG Music Publishing | — | 1987 | 2007 | 1 |
| BNN | Netherlands | August 15, 1997 | September 2018 | 1 |
| BNP Paribas | France | 1848 | — | 2 |
| Bo Ho Film Company Ltd | People's Republic of China | 1982 | — | 3 |
| BoB and Partners Co. Ltd. | — | 1995 | — | 3 |
| Bob Film Sweden | Sweden | — | 2015 | 6 |
| Bobbs-Merrill Company | United States | 1850 | — | 1 |
| BocaBoca | Spain | 1988 | — | 2 |
| Boje Buck Produktion | Germany | — | — | 1 |
| Bold Films | United States | 2007 | — | 8 |
| Boll KG | Germany | 1992 | — | 10 |
| Bolshoi Theatre | Russia | March 28, 1776 | — | 1 |
| Bolívar Films | Venezuela | 1940 | — | 1 |
| Bombay Talkies | India | 1934 | — | 7 |
| Bona Film Group | People's Republic of China | 1999 | — | 3 |
| Bones | Japan | October 1998 | — | 10 |
| Bonfire | Budapest | — | — | 1 |
| Bonfire Legend | United States | 2016 | — | 3 |
| Bonjour Pictures | Belgium | — | — | 1 |
| Bonne Pioche | France | 1993 | — | 9 |
| Boogaloo Films | Spain | 2008 | — | 3 |
| Boom Cymru TV | United Kingdom | 1994 | — | 2 |
| Boom! Studios | United States | 2005 | — | 2 |
| Booster Project | Japan | — | — | 3 |
| Bophana Center | — | December 4, 2006 | — | 2 |
| Born Free Entertainment | India | 2011 | — | 2 |
| Borough Film | United Kingdom | — | — | 1 |
| Boréal films | Spain | 1916 | — | 2 |
| Bos Bros. Film & TV Productions | Netherlands | — | — | 6 |
| Boshra Film | Iran | — | — | — |
| Bosko Biati Film | Germany | — | — | 1 |
| Bosna film | Yugoslavia | 1947 | — | 4 |
| Boulder Media | Ireland | 2000 | — | 1 |
| Boulevard Films | Australia | — | — | 4 |
| Bowers Comedy Corporation | United States | 1926 | — | — |
| BOXMEDIA | South Korea | 2009 | — | — |
| Boxoffice International Pictures | — | 1950 | 1977 | 1 |
| Boyut Film | Turkey | — | — | 5 |
| Bracan | United Kingdom | — | — | 1 |
| Brain Damage Films | — | 2001 | — | 13 |
| Brainfeeder | United States | 2008 | — | 1 |
| Brainpool TV | Germany | November 28, 1994 | — | — |
| Brainstorm Media | United States | 1995 | — | 2 |
| Brandtfilm | Germany | 1973 | — | — |
| Brandywine Productions | United States | 1960 | — | 8 |
| Brann-film | Norway | 1953 | — | 2 |
| Brasil Paralelo | Brazil | August 9, 2016 | — | 1 |
| Bratislava Film Studios | Czechoslovakia | 1949 | — | 4 |
| Brave Man Media | United States | — | — | 1 |
| Brave New Films | United States | — | — | 2 |
| Bravo Charlie | Canada | 2014 | — | 4 |
| Brazzers | Canada | 2004 | — | 5 |
| BRB Internacional | Spain | 1972 | — | — |
| Break Out Pictures | Ireland | — | — | 1 |
| BreakThru Films | Poland | — | — | 2 |
| Bren Entertainment | Spain | February 22, 2000 | — | 1 |
| Bridge Entertainment Group | Kingdom of the Netherlands | — | — | 1 |
| Bridgit Folman Film Gang | Israel | — | — | 1 |
| Bridie Films | United Kingdom | — | — | 1 |
| Brigham Young University | United States | October 10, 1875 | — | 2 |
| Bright Shining City Productions | — | 2005 | — | 1 |
| Brightburn Entertainment | Philippines | July 10, 2024 | — | 1 |
| Brightlight Pictures | — | 2001 | — | 10 |
| Brilliance Communications | Finland | 2011 | — | — |
| Brilliant Animation Studios | Taiwan | July 10, 1978 | July 22, 2016 | 1 |
| Brilliant Films | United Kingdom | September 14, 2005 | — | 1 |
| Brillstein Entertainment Partners | United States | 1991 | — | 5 |
| Bristol Bay Productions | United States | 1995 | — | 4 |
| British Actors Film Company | — | 1916 | 1929 | 8 |
| British and Colonial Films | United Kingdom | 1909 | 1924 | 16 |
| British and Dominions Imperial Studios | United Kingdom | 1929 | — | 18 |
| British Broadcasting Corporation | United Kingdom | 1927 | — | 75 |
| British Film Institute | United Kingdom | 1933 | — | 60 |
| British Instructional Films | United Kingdom | 1919 | — | 14 |
| British Satellite Broadcasting | United Kingdom | 1986 | 1990 | 1 |
| British Screen | United Kingdom | — | — | 5 |
| Brittia Films | — | 1952 | — | — |
| Broad Green Pictures | United States | 2014 | — | 2 |
| Broadcaster Audiovisual Services | Spain | — | — | 1 |
| Broadcasters | Finland | 1990 | — | — |
| Broadcasting Authority of Ireland | Ireland | October 2009 | March 15, 2023 | 4 |
| Broadway Video | United States | 1979 | — | 3 |
| Broken Lizard | United States | — | — | 2 |
| Broken Swing Productions | United States | 2010 | — | 1 |
| Broken Wall Films | — | — | — | 1 |
| Bron Studios | Canada | September 21, 2010 | — | 30 |
| Bronson Club | Finland | 2007 | — | 2 |
| Brookstreet Pictures | — | 2004 | — | 4 |
| Brookwell McNamara Entertainment | United States | 1997 | — | 4 |
| 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 |
| Brutal Media | Spain | 2009 | — | 3 |
| BRUZZ | Belgium | March 10, 2014 | — | 1 |
| Bryna Productions | United States | September 28, 1949 | — | 26 |
| BTeam Pictures | Spain | 2017 | — | 1 |
| Bubble Comics | Russia | 2011 | — | 1 |
| Bubble Studios | Russia | 2015 | — | 4 |
| BUC-FILM | Czech Republic | May 23, 1994 | — | 1 |
| Budapest Scoring Orchestra | Hungary | — | — | 1 |
| Buena Vista International France | France | — | — | 2 |
| Buendía Estudios | Spain | December 4, 2017 | — | 1 |
| BUF Compagnie | — | 1984 | — | — |
| Buffalo Gal Pictures | Canada | — | — | 7 |
| Bufo | Finland | 2007 | — | 7 |
| Buftea Studios | Romania | 1957 | — | 8 |
| Bukalapak | Indonesia | January 10, 2010 | — | 1 |
| BulBul Film | Norway | — | — | 2 |
| Bulgarian National Television | Bulgaria | December 26, 1959 | — | 5 |
| Bulldog TV | Spain | 2015 | — | — |
| Bumi Manusia Foundation | Indonesia | June 2014 | — | 1 |
| Bumilangit | Indonesia | December 8, 2003 | — | 1 |
| Bungeishunjū | Japan | 1923 | — | 1 |
| Bunim/Murray Productions | United States | — | — | 1 |
| Burbank Animation Studios | Australia | 1982 | — | 2 |
| Burning Angel | United States | December 6, 2002 | — | 2 |
| Burning Heart Records | Sweden | 1993 | — | 1 |
| Bushey Studios | United Kingdom | — | — | 4 |
| BuzzFeed | United States | 2006 | — | 2 |
| BuzzFeed Studios | United States | — | — | 1 |
| BVNG Productions | France | — | — | 1 |
| BVS Entertainment | United States | 2001 | 2014 | 11 |
| Bwrdd Ffilmiau Cymraeg | United Kingdom | — | — | 1 |
| By-pass films | Canada | — | — | 1 |
| Bélokapi | France | 1968 | October 12, 1994 | — |
| Böcek Yapım | Turkey | — | — | 5 |
| Böller und Brot | Germany | — | — | — |