| Australian Children's Television Foundation | Australia | 1982 | 1 |
| Australian Life Biograph Company | — | 1911 | 1 |
| Australian Union Conference of Seventh-day Adventists | — | 2001 | 1 |
| Avant-Film | Oslo | April 28, 1959 | 1 |
| Avatar Studios | — | 2021 | 1 |
| Avaton Films | — | 2017 | 1 |
| Avex Music Creative | Tokyo | October 1997 | 1 |
| AXS TV | Denver | 2001 | 1 |
| Aywon Film Corporation | — | — | 1 |
| Azad Azerbaijan TV | Baku | 2000 | 1 |
| Azar Film | — | — | 1 |
| Aziani | — | 2005 | 1 |
| B Production | Bratislava | May 18, 2019 | 1 |
| B's International | Higashiyama | 1990 | 1 |
| B. A. Entertainment | — | — | 1 |
| B62 Studios | Mumbai | 2021 | 1 |
| B92 | Belgrade | 1989 | 1 |
| Babel Label | Shinsenchō | 2010 | 1 |
| Baby Einstein | Atlanta | 1996 | 1 |
| Babyjane Productions | — | — | 1 |
| Babylon'13 | — | 2013 | 1 |
| Baku Media Center | Baku | 2013 | 1 |
| BandLab Technologies | — | — | 1 |
| Bang Zoom! Entertainment | Bang Zoom! Studios | 1993 | 1 |
| Bang! | — | — | 1 |
| Banijay Nordics | Sweden | — | 1 |
| Bankable Productions | — | — | 1 |
| Baozou | — | 2008 | 1 |
| Baram Pictures | — | — | 1 |
| Barber-Birnbaum | — | — | 1 |
| Barré Studio | — | 1914 | 1 |
| Basement Films | — | 2022 | 1 |
| Basic Cinematografica | — | — | 1 |
| Batabat | Barcelona | — | 1 |
| Batavia Pictures | — | — | 1 |
| Bautafilm | Umeå | 2010 | 1 |
| Bavaria Entertainment | Cologne | 1996 | 1 |
| Bavaria-Filmkunst | — | — | 1 |
| Baš Čelik Film House | Belgrade | — | 1 |
| BBC Four | London | 2002 | 1 |
| BBC Persian Television | Broadcasting House | 2009 | 1 |
| BBC Radio Bristol | — | 1970 | 1 |
| BE-TV | Bogotá | 2008 | 1 |
| Beate Uhse | Hamburg | 1981 | 1 |
| Beatrice Film | Rome | — | 1 |
| Bedlam Productions | London | — | 1 |
| Bee Train | Kichijōji | 1997 | 1 |
| Behindwoods | Chennai | 2004 | 1 |