| B Production | Bratislava | 18 de mayo de 2019 | 1 |
| B-Reel | Estocolmo | 1999 | 3 |
| B-Reel Films | — | — | 5 |
| B. A. Entertainment | — | — | 1 |
| B62 Studios | Bombay | 2021 | 1 |
 B92 | Belgrado | 1989 | 1 |
| Babel Label | Shinsenchō | 2010 | 1 |
| Baby Cow Productions | Londres | 1999 | 5 |
 BAC Films | París | 1986 | 10 |
| Backmann & Hoderoff | — | — | 1 |
| Bad Hat Harry Productions | Sony Pictures Studios | 1995 | 4 |
 Bad Robot Productions | Santa Mónica | 1998 | 21 |
| Bad Wolf | Cardiff | 2015 | — |
| Bagdasarian Productions | Santa Bárbara | 1981 | 5 |
| Bainet Media | Aya, Madrid, Bilbao | 1992 | 2 |
| Baku Media Center | Bakú | 2013 | 1 |
| Balaji Motion Pictures | Bombay | 2002 | 26 |
| Balaji Telefilms | Bombay | 1994 | 9 |
| Balboa 2 | Hvidovre | 1997 | 1 |
| Balboa Productions | — | 2018 | 3 |
| Balet y Blay | Paseo de Gracia | 1938 | — |
| Baleuko | Durango | 1993 | 8 |
 Bally Sports | — | 31 de marzo de 2021 | — |
 Bally Sports Midwest | San Luis | 1989 | — |
 Bally Sports Ohio | Cleveland | 1989 | — |
| Bally Sports Sun | Orlando | 1988 | — |
| Balti Video | Tallin | 3 de febrero de 1995 | 1 |
| Baltic Film Production | Tallin | 18 de mayo de 1998 | 3 |
| Balázs Béla Stúdió | Budapest | 1959 | 2 |
 Bamforth & Co. | Leeds | — | — |
 Bandai | Taitō | 5 de julio de 1950 | 7 |
 Bandai Namco Entertainment | Tokio | 31 de marzo de 2006 | 1 |
 Bang Bros | Miami | 2004 | 1 |
| Bang Zoom! Entertainment | Bang Zoom! Studios | 1993 | 1 |
 Banijay Kids & Family | París | 14 de febrero de 2011 | — |
| Banijay Studios Italy | — | 2018 | — |
| Bankable Productions | — | — | 1 |
| Baram Pictures | — | — | 1 |
| Barbara Moorse Workshop | Múnich | — | 2 |
| Barcinógrafo | Barcelona | 1913 | 1 |
| Barefoot Films | Berlín | 2004 | 1 |
| Barentsfilm | Nordkapp | — | 3 |
 Barrandov Studios | Praga | 1931 | 107 |
| Barret Cooperativa | Valencia | 2008 | 1 |
| Barris Industries | — | 1965 | 3 |
| Barry & Enright Productions | — | 1975 | 2 |
| Barry Sonnenfeld/Josephson | — | — | 2 |
| Barré Studio | — | 1914 | 1 |
| Basic Cinematografica | — | — | 1 |
| Batavia Pictures | — | — | 1 |
| Bathysphere productions | X Distrito de París | — | 1 |
| Batjac Productions | — | 1956 | 14 |
| Bautafilm | Umeå | 2010 | 1 |
 Bavaria Entertainment | Colonia | 1996 | 1 |
| Bazmark | Sídney | 1997 | 4 |
| Baš Čelik Film House | Belgrado | — | 1 |
 BBC Films | Broadcasting House | 1990 | 129 |
 BBC Four | Londres | 2002 | 1 |
 BBC One | Londres | 2 de noviembre de 1936 | 4 |
 BBC Scotland | Glasgow | 1992 | 2 |
 BBC Studios | Londres | abril 2016 | 1 |
 BBC Wales | Broadcasting House | 1964 | 3 |
 BBC Worldwide | Londres | 1979 | 2 |
| BE-TV | Bogotá | 2008 | 1 |
| Bedlam Productions | Londres | — | 1 |
 Bee Train | Kichijōji | 1997 | 1 |
| Behindwoods.com | Chennai | 2004 | — |
| Beijing Enlight Media | Pekín | 1998 | 5 |
| Beijing Enlight Pictures | Pekín | — | 14 |
| Beijing Gehua CATV Network Co.,Ltd. | Pekín | — | 1 |
| Bel Air Classiques | París | 2004 | 1 |
 Belarus Free Theatre | — | 30 de marzo de 2005 | 1 |
| Belga Films | Braine-l'Alleud | 1937 | — |
| Belgian Radio and Television Broadcasting | Schaerbeek | 18 de mayo de 1960 | 2 |
| Bell Broadcast and New Media Fund | Toronto | 1997 | 1 |
| Bellini Industries | — | — | 1 |
 Belsat TV | Varsovia | 2007 | 9 |
| Bend It Films | Londres | — | 1 |
| BenderSpink | — | — | 5 |
| Benelux Film Distributors | Gante | 2006 | 1 |
 Benetone Hillin Entertainment | — | 2011 | 1 |
| Bent Image Lab | Portland | 2002 | — |
| Bento Box Entertainment | Hollywood Norte | 2009 | 1 |
 Berliner Ensemble | Theater am Schiffbauerdamm | 1949 | 1 |
 Berliner Union Film | Berlín | 1963 | — |
| Berolina Film | Berlín Oeste | 1948 | 14 |
| Beta Fiction Spain | Madrid | 2022 | 1 |
 BeTV | Evere | 2004 | 8 |
 Beşiktaş Kültür Merkezi | Estambul | 11 de noviembre de 1994 | 4 |
| BFI Production Board | — | — | 1 |
| BH Entertainment | — | — | 3 |
| Bhagirathi Films | Bombay | 2015 | — |
| Bharani Pictures | Chennai | — | 5 |
| Bianca Film | — | — | 2 |
| Bianca Films | Roma | — | 1 |
| Bidel Irania | — | 2011 | 3 |
| Big Bang Entertainments | Cochín | 2015 | 2 |
| Big Bang Media | — | 2009 | — |
| Big Ten Network | Chicago | 30 de agosto de 2007 | — |
| Big Things Films | Dublín | 2024 | 1 |
| Big Ticket Television | Hollywood | 1994 | — |
| BigBalls Films | Londres | 2005 | — |
| Billionfold Inc. | Burbank | 2003 | — |
| Biograf Jan Svěrák | Praga | 1994 | 8 |
 Biograph Company | Nueva York | diciembre 1895 | 61 |
| Bioskop Film | Múnich | — | 3 |
 Bioware | Edmonton | febrero 1995 | 1 |
| Bitters End | — | 22 de abril de 1994 | 1 |
| Biz Television | — | 2011 | 1 |
| BKM Film | — | — | 4 |
| BKP production | Praga | 11 de octubre de 2000 | 1 |
| Black Bear Pictures | Santa Mónica | 2011 | 22 |
| Black Label Media | — | 2013 | 8 |
| Black Lion Pictures | Sotkamo | 28 de marzo de 2012 | 1 |
 Black Maria | — | 1893 | — |
 Black Star Inc. | Moscú | 2006 | — |
| Blackpills | — | 5 de mayo de 2017 | 1 |
| Blacksmith | París | 20 de diciembre de 2022 | 1 |
| Blender Institute | Ámsterdam | 2007 | 1 |
 Blibli | — | 2010 | 2 |
 Blim TV | — | 22 de febrero de 2016 | — |
| Blind Spot Pictures | Hermanninmäki | 1997 | 4 |
 Blink | Londres | 1985 | — |
 Blizzard Entertainment | Irvine | 8 de febrero de 1991 | 1 |
| Blondie Girl Productions | — | — | 1 |
| Bloody Disgusting | — | 2001 | 5 |
 Bloomberg L.P. | Bloomberg Tower | octubre 1981 | 1 |
 Blowback Productions | Nueva York | 1988 | 1 |
| Blue Hills Pictures | Praga | 13 de marzo de 2019 | 1 |
 Blue Sky Studios | Greenwich | 22 de febrero de 1987 | 18 |
| Bluebird Film Company | — | 1979 | 2 |
| Bluebird Photoplays Inc. | California | 1916 | 4 |
| Blueeyes Productions | — | — | 4 |
 Blueming Pictures GmbH | Düsseldorf | 5 de diciembre de 2024 | 1 |
 Blumhouse Productions | Los Ángeles | 2000 | 92 |
| BMG Music Publishing | Nueva York | 1987 | 1 |
 BNN | Hilversum | 15 de agosto de 1997 | 1 |
| Bo Ho Film Company Ltd | Hong Kong | 1982 | 3 |
| Bob Film Sweden | Estocolmo | — | 6 |
| Boje Buck Produktion | Berlín | — | 1 |
| Boll KG | Bergrheinfeld | 1992 | 10 |
 Bona Film Group | — | 1999 | 3 |
 BONES | Suginami | octubre 1998 | 10 |
| Bonjour Pictures | — | — | 1 |
 Bonne Pioche | París | 1993 | 9 |
| Boogaloo Films | Barcelona | 2008 | 3 |
| Boom Cymru TV | Cardiff | 1994 | 2 |
| Boom! Studios | Los Ángeles | 2005 | 2 |
| Booster Project | — | — | 3 |
| Bophana Center | Nom Pen | 4 de diciembre de 2006 | 2 |
| Born Free Entertainment | Bombay | 2011 | 2 |
| Borough Film | — | — | 1 |
| Bos Bros. Film & TV Productions | Ámsterdam | — | 6 |
| Boshra Film | Teherán | — | — |
 Boulder Media | Dublín | 2000 | 1 |
| Boulevard Films | — | — | 4 |
| BOXMEDIA | Seúl | 2009 | — |
| Boxoffice International Pictures | Los Ángeles | 1950 | 1 |
| Boyut Film | Estambul | — | 5 |
| Brain Damage Films | Scottsdale | 2001 | 13 |
| Brainfeeder | Los Ángeles | 2008 | 1 |
 Brainpool TV | Köln-Mülheim | 28 de noviembre de 1994 | — |
| Brainstorm Media | Los Ángeles | 1995 | 2 |
| Brann-film | — | 1953 | 2 |
 Brasil Paralelo | São Paulo | 9 de agosto de 2016 | 1 |
| Brave New Films | — | — | 2 |
| Bravo Charlie | Montreal | 2014 | 4 |
| BRB Internacional | Barcelona | 1972 | — |
| Bridge Entertainment Group | — | — | 1 |
| Bridgit Folman Film Gang | — | — | 1 |
| Brigada Multinacional Plus Ultra | — | — | 1 |
| Bright Shining City Productions | Austin | 2005 | 1 |
| Brightlight Pictures | Vancouver | 2001 | 10 |
| Brilliant Animation Studios | Taipéi | 10 de julio de 1978 | 1 |
| Brilliant Films | — | 14 de septiembre de 2005 | 1 |
| Brillstein Entertainment Partners | Beverly Hills | 1991 | 5 |
| British and Dominions Imperial Studios | — | 1929 | 18 |
 British Broadcasting Corporation | Broadcasting House, Londres | 1927 | 75 |
 British Film Institute | Municipio de Lambeth | 1933 | 60 |
| British Screen | Londres | — | 5 |
| Broadcaster Audiovisual Services | — | — | 1 |
| Broadcasters | — | 1990 | — |
 Broadway Video | 30 Rockefeller Plaza | 1979 | 3 |
| Broken Swing Productions | San Diego | 2010 | 1 |
| Bronson Club | — | 2007 | 2 |
| Brookstreet Pictures | Beverly Hills | 2004 | 4 |
| Brown Bag Films | Dublín | 1994 | 1 |
| Brownstone Productions | California | 16 de octubre de 2002 | 1 |
| Bruce Seven Productions | — | — | 1 |
| BTeam Pictures | Madrid | 2017 | 1 |
| Bubble Studios | San Petersburgo | 2015 | 4 |
| BUC-FILM | Praga | 23 de mayo de 1994 | 1 |
| Budapest Scoring Orchestra | Budapest | — | 1 |
| Buena Vista International | Burbank | 1961 | 5 |
 Buendía Estudios | — | 4 de diciembre de 2017 | 1 |
 BUF Compagnie | París | 1984 | — |
| Buffalo Gal Pictures | — | — | 7 |
 Bukalapak | Yakarta | 10 de enero de 2010 | 1 |
| Bulldog TV | calle de Orense | 2015 | — |
| Bumi Manusia Foundation | Cianjur | junio 2014 | 1 |
| Bungeishunjū | Kioichō | 1923 | 1 |
 Bunim/Murray Productions | Los Ángeles | — | 1 |
 Burbank Films Australia | Australia | 1982 | 2 |
| BVNG Productions | — | — | 1 |
 BVS Entertainment | Los Ángeles | 2001 | 11 |
| Bwrdd Ffilmiau Cymraeg | — | — | 1 |
| By-pass films | Quebec | — | 1 |