| B Production | Bratislava | May 18, 2019 | 1 |
| B's International | Higashiyama | 1990 | 1 |
| B-Reel | Stockholm | 1999 | 3 |
| B. A. Entertainment | — | — | 1 |
| B62 Studios | Mumbai | 2021 | 1 |
| B92 | Belgrade | 1989 | 1 |
| Babe Films | Paris | — | 3 |
| Babel Label | Shinsenchō | 2010 | 1 |
| Babelsberg Film GmbH | Babelsberg | — | 3 |
| Babelsberg Studio | Potsdam | 1912 | 16 |
| Baby Einstein | Atlanta | 1996 | 1 |
| Babyjane Productions | — | — | 1 |
| Babylon'13 | — | 2013 | 1 |
| Bainet Media | Aia, Madrid, Bilbao | 1992 | 2 |
| Baku Media Center | Baku | 2013 | 1 |
| Balboa Amusement Producing Company | Long Beach | 1913 | 26 |
| Baleuko | Durango | 1993 | 8 |
| Bally Sports North | Minneapolis | 1986 | — |
| Bally Sports Ohio | Cleveland | 1989 | — |
| Bally Sports Wisconsin | Milwaukee | 2007 | — |
| Balázs Béla Stúdió | Budapest | 1959 | 2 |
| Bamforth & Co. | Leeds | — | — |
| BandLab Technologies | — | — | 1 |
| Bang Zoom! Entertainment | Bang Zoom! Studios | 1993 | 1 |
| Bang! | — | — | 1 |
| Banijay Entertainment | London | July 9, 2026 | — |
| Banijay Entertainment S.A. | Paris | 2008 | — |
| Banijay Finland | Pitäjänmäki industrial area | — | 6 |
| Banijay Kids & Family | Paris | February 14, 2011 | — |
| Banijay Nordics | Sweden | — | 1 |
| Banijay UK | London | 1994 | — |
| Bankable Productions | — | — | 1 |
| Baozou | — | 2008 | 1 |
| Baram Pictures | — | — | 1 |
| Baram Pictures Corp. | Seoul | February 16, 2017 | — |
| Barber-Birnbaum | — | — | 1 |
| Barcelona City Council | City Hall of Barcelona | — | 2 |
| Bardel Entertainment | Vancouver | 1987 | 4 |
| Barentsfilm | Nordkapp Municipality | — | 3 |
| Barrandov Film Studio | Prague | 1957 | 52 |
| Barrandov Studios | Prague | 1931 | 107 |
| Barry & Enright Productions | — | 1975 | 2 |
| Barré Studio | — | 1914 | 1 |
| Basement Films | — | 2022 | 1 |
| Basic Cinematografica | — | — | 1 |
| Batabat | Barcelona | — | 1 |
| Batavia Pictures | — | — | 1 |
| Batjac Productions | — | 1956 | 14 |
| Bautafilm | Umeå | 2010 | 1 |
| Bavaria Entertainment | Cologne | 1996 | 1 |
| Bavaria Film | Geiselgasteig | 1919 | 70 |
| Bavaria-Filmkunst | — | — | 1 |
| Bayerischer Rundfunk | Munich | 1945 | 16 |
| Bazelevs Company | Moscow | 1994 | 43 |
| Bazmark | Sydney | 1997 | 4 |
| Baš Čelik Film House | Belgrade | — | 1 |
| BBC Cymru Wales | Broadcasting House | 1964 | 3 |
| BBC Film | Broadcasting House | 1990 | 129 |
| BBC Four | London | 2002 | 1 |
| BBC Natural History Unit | — | 1957 | 3 |
| BBC Persian Television | Broadcasting House | 2009 | 1 |
| BBC Radio Bristol | — | 1970 | 1 |
| BBC Scotland | Glasgow | 1992 | 2 |
| BBC Television | London | 1927 | 2 |
| BBC Worldwide | London | 1979 | 2 |
| BE-TV | Bogotá | 2008 | 1 |
| Beacon Pictures | Tokyo | 1990 | 18 |
| Beate Uhse | Hamburg | 1981 | 1 |
| Beatrice Film | Rome | — | 1 |
| Bedlam Productions | London | — | 1 |
| Bee Train | Kichijōji | 1997 | 1 |
| Behindwoods | Chennai | 2004 | 1 |
| Behindwoods.com | Chennai | 2004 | — |
| Beijing Gehua CATV Network Co.,Ltd. | Beijing | — | 1 |
| Bel Ami | Bratislava | 1993 | — |
| 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 |
| Bellman Productions | France | 1997 | — |
| Belsat | Warsaw | 2007 | 9 |
| Belvision Studios | Brussels-Capital Region | 1956 | 4 |
| 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 |
| Berliner Union Film | Berlin | 1963 | — |
| Best Film | — | November 7, 2001 | 1 |
| BET | Washington, D.C. | July 1983 | 2 |
| Beta Film | Oberhaching | 1959 | 5 |
| Bhagirathi Films | Mumbai | 2015 | — |
| Bharani Pictures | Chennai | — | 5 |
| Bhavya Creations | Jubilee Hills | 2007 | 7 |
| Bianca Film | — | — | 2 |
| Bianca Films | Rome | — | 1 |
| Bibury Animation Studios | Mitaka | May 2017 | 1 |
| Bidel Irania | — | 2011 | 3 |
| Bidibul Productions | — | 2009 | 8 |
| Big Bang Entertainments | Kochi | 2015 | 2 |
| Big Box Series | Ahmedabad | 2023 | 3 |
| Big Soul Productions | Toronto | 1999 | — |
| Big Ten Network | Chicago | August 30, 2007 | — |
| Big Ticket Entertainment | Hollywood | 1994 | — |
| BigBalls Films | London | 2005 | — |
| BIGFlix | Mumbai | 2008 | 1 |
| Bild- und Filmamt | — | 1917 | 1 |
| Billionfold Inc. | Burbank | 2003 | — |
| BiM Distribuzione | Rome | 1983 | 12 |
| Biograph Company | New York City | December 1895 | 61 |
| Bioscop | Prague | 2002 | 1 |
| Bioskop Film | Munich | — | 3 |
| Bison Film Company | Los Angeles | 1909 | 4 |
| Bitters End | — | April 22, 1994 | 1 |
| Biz Television | — | 2011 | 1 |
| BKM Film | — | — | 4 |
| BKP production | Prague | October 11, 2000 | 1 |
| Blachfilms | — | — | 1 |
| Black Orange | — | November 2005 | 2 |
| Black Sheep Film Productions | — | 2010 | — |
| Black Spark Film & TV | — | — | 1 |
| Black Star | Moscow | 2006 | — |
| Black Walk | Whitby | 1990 | 1 |
| Blacksmith | Paris | December 20, 2022 | 1 |
| Blair Entertainment | New York City | 1970 | — |
| Blast! Films | London | — | 1 |
| Blim TV | — | February 22, 2016 | — |
| Blinding Edge Pictures | Berwyn | 1999 | 16 |
| 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 Circle | Amsterdam | 2004 | — |
| Blue Omega | Annapolis | 2003 | 1 |
| Blue Sky Studios | Greenwich | February 22, 1987 | 18 |
| Blue-Tongue Films | Sydney | — | 1 |
| Blueeyes Productions | — | — | 4 |
| Blueming Pictures GmbH | Düsseldorf | December 5, 2024 | 1 |
| Bluverde Filmproduktion | Berlin | — | — |
| BMG Music Publishing | New York City | 1987 | 1 |
| BoB and Partners Co. Ltd. | Hong Kong | 1995 | 3 |
| Bob Film Sweden | Stockholm | — | 6 |
| Bobbs-Merrill Company | Indianapolis | 1850 | 1 |
| BocaBoca | — | 1988 | 2 |
| Boje Buck Produktion | Berlin | — | 1 |
| Bold Films | Los Angeles | 2007 | 8 |
| Bolshoi Theatre | Moscow | March 28, 1776 | 1 |
| Bolívar Films | — | 1940 | 1 |
| Bonjour Pictures | — | — | 1 |
| Bonne Pioche | Paris | 1993 | 9 |
| Boogaloo Films | Barcelona | 2008 | 3 |
| Boom Cymru TV | Cardiff | 1994 | 2 |
| Booster Project | — | — | 3 |
| Bophana Center | Phnom Penh | December 4, 2006 | 2 |
| Bosko Biati Film | Berlin | — | 1 |
| Boulder Media | Dublin | 2000 | 1 |
| Boulevard Films | — | — | 4 |
| Boxoffice International Pictures | Los Angeles | 1950 | 1 |
| Bracan | Cardiff | — | 1 |
| Brainstorm Media | Los Angeles | 1995 | 2 |
| Brasil Paralelo | São Paulo | August 9, 2016 | 1 |
| Brave Man Media | Delray Beach | — | 1 |
| Brazzers | — | 2004 | 5 |
| BreakThru Films | — | — | 2 |
| Bren Entertainment | — | February 22, 2000 | 1 |
| Bridgit Folman Film Gang | — | — | 1 |
| Bridie Films | London | — | 1 |
| Brightlight Pictures | Vancouver | 2001 | 10 |
| Brilliance Communications | Kerava | 2011 | — |
| Brilliant Animation Studios | Taipei | July 10, 1978 | 1 |
| Brilliant Films | — | September 14, 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 Film Institute | London Borough of Lambeth | 1933 | 60 |
| British Screen | London | — | 5 |
| Brittia Films | France | 1952 | — |
| Broadcaster Audiovisual Services | — | — | 1 |
| Broadcasting Authority of Ireland | — | October 2009 | 4 |
| Broadway Video | 30 Rockefeller Plaza | 1979 | 3 |
| Broken Lizard | — | — | 2 |
| Broken Swing Productions | San Diego | 2010 | 1 |
| Broken Wall Films | Worcester | — | 1 |
| Brookstreet Pictures | Beverly Hills | 2004 | 4 |
| Brookwell McNamara Entertainment | — | 1997 | 4 |
| Broth Film | Munich | — | 1 |
| Brown Bag Films | Dublin | 1994 | 1 |
| Brunswick Corporation | Lake Forest | September 15, 1845 | 1 |
| Brutal Media | Barcelona | 2009 | 3 |
| BRUZZ | — | March 10, 2014 | 1 |
| Bryna Productions | Beverly Hills | September 28, 1949 | 26 |
| Bubble Studios | Saint Petersburg | 2015 | 4 |
| Buffalo Gal Pictures | — | — | 7 |
| Bufo | Hermanninmäki | 2007 | 7 |
| Buftea Studios | Buftea | 1957 | 8 |
| Bulldog TV | Calle de Orense, Madrid | 2015 | — |
| Bungeishunjū | Kioichō | 1923 | 1 |
| Burning Angel | New York City | December 6, 2002 | 2 |
| Burning Heart Records | Örebro | 1993 | 1 |
| Bushey Studios | — | — | 4 |
| BuzzFeed | New York, New York City | 2006 | 2 |
| BVS Entertainment | Los Angeles | 2001 | 11 |
| Bwrdd Ffilmiau Cymraeg | — | — | 1 |
| Bélokapi | France | 1968 | — |
| Böcek Yapım | Istanbul | — | 5 |
| Böller und Brot | Stuttgart | — | — |