| ATR | — | 2015 | 1 |
| Atria | — | 1953 | 1 |
| Attackers | टोक्यो | 1996 | 1 |
| Attica Art Productions | एथेंस | — | 1 |
| Audax Films | सांता मोनिका | 2013 | 1 |
| Audiovisual Archive of the Democratic and Labour Movement | — | — | 1 |
| August Entertainment | — | 1988 | 1 |
| Augustus Film | ऐम्स्टर्डैम | — | 1 |
| Australian Film Institute | मेलबॉर्न | नवंबर 1958 | 1 |
| Avatar Studios | — | 2021 | 1 |
| Avaton Films | — | 2017 | 1 |
| Avex Entertainment | — | अप्रैल 2007 | 1 |
| Avex Music Creative | टोक्यो | अक्टूबर 1997 | 1 |
| Aywon Film Corporation | — | — | 1 |
| Azad Azerbaijan TV | बाकू | 2000 | 1 |
| Azalea Producciones | — | — | 1 |
| Azar Film | — | — | 1 |
| Aziani | — | 2005 | 1 |
| B Production | ब्रातिस्लावा | 18 मई 2019 | 1 |
| B. A. Entertainment | — | — | 1 |
| B62 Studios | मुम्बई | 2021 | 1 |
| B92 | बेलग्रेड | 1989 | 1 |
| Babyjane Productions | — | — | 1 |
| Bad Monkey | हैदराबाद | 2005 | 1 |
| Baku Media Center | बाकू | 2013 | 1 |
| Balboa 2 | Hvidovre | 1997 | 1 |
| Baldur Film | Seltjarnarnes | — | 1 |
| Balti Video | ताल्लिन | 3 फ़रवरी 1995 | 1 |
| Bandai Namco Entertainment | टोक्यो | 31 मार्च 2006 | 1 |
| BandLab Technologies | — | — | 1 |
| Bang Zoom! Entertainment | Bang Zoom! Studios | 1993 | 1 |
| Bang! | — | — | 1 |
| Banijay Nordics | स्वीडन | — | 1 |
| Bankable Productions | — | — | 1 |
| Barber-Birnbaum | — | — | 1 |
| Barcinógrafo | बार्सिलोना | 1913 | 1 |
| Barefoot Films | बर्लिन | 2004 | 1 |
| Barret Cooperativa | वालेंसिया / वालेंसिया | 2008 | 1 |
| Barré Studio | — | 1914 | 1 |
| Barunson Studio | — | — | 1 |
| Base FX | लॉस एंजेलिस | 2006 | 1 |
| Basement Films | — | 2022 | 1 |
| Batabat | बार्सिलोना | — | 1 |
| Bathysphere productions | 10ᵗʰ arrondissement of Paris | — | 1 |
| Bautafilm | ऊमेओ | 2010 | 1 |
| Bavaria-Filmkunst | — | — | 1 |
| BBC Earth | — | 2015 | 1 |
| BBC Radio Bristol | — | 1970 | 1 |