| Action Synthese | — | 21 April 1998 | 1 |
| Ad Vitam Distribution | Prancis | 1998 | 1 |
| Adam Film | — | — | 1 |
| Adam's World Of Imagination | Kerala | 2015 | 1 |
| Addict Films | Oslo | — | 1 |
| Adelaide Film Festival | Glenside | 2002 | 1 |
| Advanced Action Videos | Redding | 7 Mei 2003 | 1 |
| Aetios Productions | Saint-Sauveur | — | 1 |
| AFI Conservatory | — | 1969 | 1 |
| Africa Magic | Nigeria | 2004 | 1 |
| AFS Film | Istanbul | 1997 | 1 |
| AGedO | — | 1992 | 1 |
| Agora Films | — | 1999 | 1 |
| AI Multimedia | Nashville | 2018 | 1 |
| Aim Rain Limited | Middlesex | 21 Mei 1993 | 1 |
| Ajia-do Animation Works | Saitama | 1978 | 1 |
| Al Jazeera Documentary Channel | — | 2007 | 1 |
| Alatas Films | — | — | 1 |
| Albena Produccions | L'Alcúdia | — | 1 |
| Albert Bonniers Förlag | Stockholm | 1837 | 1 |
| ALEF Film & Media Group | Bratislava | 1997 | 1 |
| Alexander Nanau Production | — | — | 1 |
| Alexandros Film | — | — | 1 |
| Alfa Pictures | Barcelona | — | 1 |
| Algefa | Berlin | 1936 | 1 |
| Alice Films | Paris | — | 1 |
| Alien Internet Services | Aalst, Belgia | 2012 | 1 |
| Align | — | — | 1 |
| All Things Comedy | Los Angeles | Oktober 2012 | 1 |
| All Yours Film | — | — | 1 |
| Alligator Film | — | — | 1 |
| Allspark Pictures | Burbank | Mei 2008 | 1 |
| Alpha TV | Kifisia | 26 Januari 1996 | 1 |
| Alpha-i | Banani (neighbourhood) | — | 1 |
| Alta Loma Films | — | Desember 1999 | 1 |
| Alta Vista | — | — | 1 |
| Altamira Pictures | — | 1993 | 1 |
| AM Television | — | 2012 | 1 |
| Amaru Entertainment | Atlanta | 1997 | 1 |
| Amazon | Seattle | 5 Juli 1994 | 1 |
| Ambient Entertainment | Hannover | 11 Oktober 1999 | 1 |
| AMC Networks International Southern Europe | Madrid | 8 Juli 2014 | 1 |
| AMOS Pictures | — | — | 1 |
| Anatman Films | — | — | 1 |
| Andell Holdings | Los Angeles | — | 1 |
| Angel Digital Pvt Ltd | — | — | 1 |
| Angel Films | Helsinki | 11 Agustus 2009 | 1 |
| Animation Digital Network | Paris | September 2013 | 1 |