| A Band Apart | Los Angeles | 1991 | 13 |
 A Contracorriente Films | Barcelona | 16 November 2017 | 14 |
| A Film Eesti | — | 1994 | — |
| A Private View | Ghent | 24 May 1994 | 9 |
| A Stern Talking To | — | — | 1 |
| A-Film | Amsterdam | 1999 | 1 |
 A. Drankov & Co. | — | 1907 | 3 |
| A. Film A/S | Copenhagen | 1988 | 20 |
| A.A. Les Films Belges | — | — | 1 |
| A.GI.DI. | — | — | 2 |
| A/S Palladium | Copenhagen | 1919 | 2 |
| A1Plus Film Production | Vienna | — | — |
| AA Visioon Stuudio | — | 1997 | — |
 Aafa-Film | Berlin | 1918 | 18 |
| Aamu Film Company | Länsi-Herttoniemi | — | 9 |
| Aashirvad Cinemas | Kochi | 2000 | 25 |
| AB Bild & Ton | — | — | 2 |
| AB Productions | Saint-Denis | 1977 | — |
| AB Svensk Filminspelning | — | 1922 | 2 |
| AB Svenska Ord | Stockholm | 1961 | 2 |
| AbbottVision | London | 2008 | 2 |
| ABC Circle Films | — | 1968 | 2 |
 ABC Family Worldwide | Burbank | 1990 | — |
 ABC News | Upper West Side | 15 June 1945 | 1 |
 ABC Signature | Burbank | 21 March 1985 | 3 |
 ABC Television Limited | London | 1956 | — |
 AbemaNews | Tokyo | April 2015 | — |
 AbemaTV | Udagawachō, Maruyamachō, Shinsenchō | April 2015 | — |
| Abhishek Agarwal Arts | Hyderabad | 2018 | 1 |
 ABKCO Records | New York City | 1961 | 2 |
| About Film | Seoul | — | 6 |
 ABS-CBN Corporation | Quezon City | 13 June 1946 | 38 |
| ABS-CBN Film Productions | — | — | 2 |
 ABS-CBN Studios | Diliman | 1962 | — |
 Abu Dhabi Media | Abu Dhabi | 2007 | 1 |
| Abú Media | Indreabhán | 2000 | 1 |
| Academy Films | London | 1985 | 2 |
 Academy of Theatre, Radio, Film and Television | — | 1945 | 1 |
| Access Entertainment | — | 2018 | 5 |
 Access Industries | New York City | 1986 | 3 |
| Achab Film | Rome | — | 1 |
| Acropolis Entertainment | — | 6 October 2006 | 1 |
| Act Art Generation | — | 21 May 2002 | 1 |
| Act III Broadcasting | — | 1986 | 1 |
| Act III Communications | — | 1985 | 1 |
| Act III Productions | — | — | 1 |
 Actas | Mitaka | 6 July 1998 | 1 |
| Action Concept | Hürth | 1992 | — |
| Action Synthese | — | 21 April 1998 | 1 |
 Actors Studio | New York City | 5 October 1947 | 1 |
 Adam & Eve | Hillsborough | March 1971 | 18 |
| Adam Film | — | — | 1 |
| Adastra Films | Cannes | 2008 | 4 |
| Addict Films | Oslo | — | 1 |
| Adel Productions | — | 1968 | 6 |
| Adelaide Film Festival | Glenside | 2002 | 1 |
| Adelaide Film Festival Investment Fund | — | — | 1 |
| Adelphi Films | England | 1939 | 3 |
| Adler Entertainment | — | — | 1 |
 Adult Swim | Atlanta | September 1999 | 3 |
 Adult Time | Montreal | 2019 | 8 |
| AEG Live | Los Angeles | — | 3 |
 Aegean Oil S.A. | — | — | 1 |
| Aetios Productions | Saint-Sauveur | — | 1 |
| AFI Conservatory | — | 1969 | 1 |
| AFIFA | Wiesbaden | 1921 | — |
| Africa Magic | Nigeria | 2004 | 1 |
| Afro-Centric Productions | Boston | 1998 | — |
| After Dark Films | Los Angeles | — | 10 |
| After the Wedding | — | — | 1 |
| Agat Film & Cie | Paris | — | 5 |
 Agat Films & Cie – Ex Nihilo | Paris | 30 June 1986 | 30 |
| Agencja Produkcji Filmowej | — | 1991 | 2 |
 Agenda Media | Hamburg, Lauenburg/Elbe | 2008 | — |
| Aggregate Films | California | 2012 | 2 |
| Agitator | — | — | 1 |
 Agnès b. | Paris | 1975 | 1 |
| AGS Entertainment | Chennai | 2006 | 22 |
| AGTV Productions | — | 2011 | — |
 Ahotsa.info | — | 2014 | 1 |
| Ajay Devgn Films | Mumbai | 2000 | 13 |
| Akanga Film Asia | — | — | 1 |
| Akson Studio | — | — | 5 |
| Aksoy Film Production | Istanbul | — | 2 |
| Al Arabia Cinema Production & Distribution | Giza | 2000 | 2 |
| Al Hayat Media Center | Islamic State | 2014 | 2 |
 Al Jazeera | Doha | November 1996 | 3 |
| Al Jazeera Documentary Channel | — | 2007 | 1 |
| Ala Bianca Group S.r.l. | Modena | 1990 | 1 |
| Alatas Films | — | — | 1 |
| Albanian National Center of Cinematography | — | — | 1 |
| Albena Produccions | L'Alcúdia | — | 1 |
| Alcon Entertainment | Los Angeles | 1997 | 32 |
| Alcove Entertainment | London | 2005 | 2 |
| ALEF Film & Media Group | Bratislava | 1997 | 1 |
| Alexandros Film | — | — | 1 |
 Algefa | Berlin | 1936 | 1 |
| Alia Film | — | — | 3 |
| Alice Films | Paris | — | 1 |
| Alien Internet Services | Aalst | 2012 | 1 |
 All Things Comedy | Los Angeles | October 2012 | 1 |
| All Yours Film | — | — | 1 |
| All-Ukrainian Photo-Cinema Administration | Soviet Union | 1922 | 19 |
| All3Media | London | 2003 | — |
| Allary Film | Munich | 1984 | 1 |
 Allen Media Group | Los Angeles | 1993 | — |
| Allfilm | — | 1995 | 30 |
 Alliance Atlantis | Toronto | 1998 | 17 |
| Allians Film | — | — | 1 |
| Allied Filmmakers | — | 1985 | 9 |
| Alligator Film | — | — | 1 |
 Alloy Entertainment | New York City | — | 7 |
 Allspark | Burbank | 6 March 2009 | 6 |
 Allspark Pictures | Burbank | May 2008 | 1 |
| Alpha Films | — | — | 1 |
| Alpha France | Paris | 1966 | 4 |
| Alpha Group Company | Shantou | 1993 | — |
 Alpha TV | Kifisia | 26 January 1996 | 1 |
| Alpha-i | Banani (neighbourhood) | — | 1 |
| Alquimia Cinema | Madrid | — | 1 |
| Alta Films | Madrid | — | 4 |
| Alta Loma Films | — | December 1999 | 1 |
| AltaVista | Palo Alto | 1994 | 2 |
| Altice Studio | — | — | 1 |
| Altitude Film | — | 2012 | 4 |
| Amal Neerad Productions | Ernakulam | 2012 | 2 |
| Amanah Surga Productions | — | — | 2 |
 Amaru Entertainment | Atlanta | 1997 | 1 |
| Amateru | Turin | 2018 | 1 |
 Amazon | Seattle | 5 July 1994 | 1 |
 Amazon MGM Studios | Culver City | 2010 | 38 |
 Amazon Prime Video | United States | 7 September 2006 | 7 |
| Amazone | — | April 1988 | — |
 Amber Films | — | 1968 | 1 |
| Ambient Entertainment | Hanover | 11 October 1999 | 1 |
 AMC Networks International Southern Europe | Madrid | 8 July 2014 | 1 |
 Amedia | Novoostapovskaya street, Moscow | 21 February 2002 | 7 |
 American Broadcasting Company | New York City | 12 October 1943 | 26 |
 American Broadcasting-Paramount Theatres, Inc. | 1501 Broadway | 15 November 1949 | 1 |
| American Film Company | — | 2008 | 2 |
 American Film Institute | Los Angeles | 1967 | 3 |
 American Film Manufacturing Company | Chicago | 1910 | 39 |
| American Greetings | Cleveland | 1906 | 2 |
| American Nurses Association | Silver Spring | 1896 | — |
 American Society of Civil Engineers | Reston | 1852 | 1 |
| American Zoetrope | San Francisco | 1969 | 57 |
| AMG Entertainment | — | 11 August 2000 | 3 |
| Amicus Productions | Shepperton | 1960 | 23 |
| AMOS Pictures | — | — | 1 |
 Amuse | Fujikawaguchiko, Sakuragaokachō | 16 October 1977 | 3 |
 Anagram Produktion | Lund | 2001 | 8 |
| Anagram Sverige | Malmö | 3 August 2004 | — |
| Anand Pandit Motion Pictures | Mumbai | — | 5 |
| Anatman Films | — | — | 1 |
| Anchor Bay Entertainment | Beverly Hills | 1985 | 2 |
| And Pictures | Ebisu-Minami | 13 May 2013 | 2 |
| ANDMARQ | — | 8 September 2015 | 2 |
| Angel Films | Copenhagen | 1988 | 1 |
| Anglo-Hollandia | — | 1919 | 5 |
| Anhui Television | — | 30 September 1960 | 1 |
 Anima Vitae | Helsinki | 6 March 2000 | 2 |
| Animafilm | Sector 3 | 1964 | 1 |
| Animagrad | Kyiv | 2012 | 2 |
 Animal Logic | Sydney | 1991 | 8 |
 Animal Planet | Silver Spring | October 1996 | 1 |
 Animation Digital Network | Paris | September 2013 | 1 |
| Animax Entertainment | Los Angeles | 26 October 2001 | 1 |
| Animose Studio | Moscow | 1999 | — |
 Aniplex | Rokubanchō | September 1995 | 1 |
| Anjali Pictures | — | — | 5 |
| Annapurna Films | — | — | 5 |
 Annapurna Studios | Hyderabad | 1975 | 32 |
| Anosi | Chalandri | October 1987 | 1 |
| ANS Productions | Istanbul | — | 3 |
| ANS TV | Baku | 1991 | 1 |
 Antena 3 | Madrid | 25 December 1989 | 13 |
 Antenne 2 | — | 1975 | 3 |
 Anti-Corruption Foundation | — | 9 September 2011 | 4 |
| Anzervos | Athens | 1943 | 13 |
| Aperture Entertainment | — | 2009 | 3 |
| Apocalypso Pictures | Boars Hill | — | 1 |
| Apollo Film Productions | Tänassilma | 5 July 2017 | 14 |
| Appaloosa Films | Paris | 2009 | 4 |
| Appalshop | — | 1969 | 2 |
 Appian Way | — | 311 BC | 1 |
| Appian Way Productions | West Hollywood | 2004 | 14 |
| Applause Entertainment | Mumbai | — | 3 |
 Apple Corps | London | 1967 | 2 |
 Apple TV | — | November 2019 | 1 |
 Applecross peninsula | — | — | 1 |
| APPP | Suginami | 1984 | 3 |
| Aprilfilm | Fredrikstad Municipality | — | 3 |
 Aquarius Films | Sydney | 2008 | 2 |
| Aquarius Films | — | — | 1 |
| Aquila Films | Italy | 1907 | 2 |
| Aquí y Allí Films | Madrid | 2010 | 9 |
| Araba Films | Vitoria-Gasteiz | — | — |
| Arad Productions Inc. | — | — | 1 |
 Aragón TV | Aragon | 2006 | 1 |
| Arc Media | — | — | 1 |
| Arca-Winston Films Corp. | — | — | 1 |
| Arcadia | — | — | 1 |
| Arcadia Motion Pictures | Barcelona | 2004 | 19 |
 Archdiocese of Caceres | — | 29 June 1951 | 1 |
 Archie Comics | New York, Pelham | 1939 | 1 |
| Archipel 33 | Paris | 1988 | 2 |
| Archipel 35 | Paris | — | 6 |
| Arco Film | Rome | 1960 | 10 |
| Arena Films | — | — | 6 |
| Argentina Sono Film | — | 1933 | 114 |
| Argosy Pictures | — | 1939 | 2 |
| Argus Film Produktie | Amsterdam | — | 1 |
| Ark Resources Entertainment | — | 2002 | 1 |
| Armadillo Film | Amsterdam | 2001 | 1 |
 Armenia 1 | Yerevan | 29 November 1956 | 1 |
| Army Pictorial Service | — | — | 1 |
| Arnljot Berg Filmproduksjon | Oslo | 1966 | 2 |
| ARP Sélection | Paris | 20 January 1984 | 6 |
| Arpa Films | Barcelona | — | 1 |
| Ars Media | — | — | 1 |
 Arsenal | — | 1975 | — |
| Arsmedia | — | — | 1 |
 Art Aia-Creatives / In / Residence | Sesto al Reghena | — | 1 |
| Art for The World | Geneva | 1995 | 1 |
| Art-O-Graf | — | 1919 | 1 |
 Arte | Strasbourg | — | 76 |
| Arte France | Issy-les-Moulineaux | 2 June 1986 | 43 |
| Arte France Cinéma | Issy-les-Moulineaux | 30 August 1991 | 89 |
 Arte Radiotelevisivo Argentino | Buenos Aires | 22 December 1989 | 4 |
| Artemis Films | Montreal | — | 1 |
| Arthouse Traffic | — | 2003 | — |
| Artisan Entertainment | United States, Santa Monica | 1982 | 20 |
| Artist Company | Seoul | 2016 | — |
| Artists Equity | — | 2022 | 5 |
| Artland | Musashino | 14 September 1978 | 1 |
| Arts Council England | — | 1994 | 8 |
| Arts Council of Great Britain | — | 1940 | 2 |
 Arts Council of Wales | Wales Millennium Centre | 1946 | 1 |
| Artza Productions | — | 2006 | 1 |
| Artédis | — | 1983 | 1 |
 Artémis Productions | — | 1994 | 11 |
| ARY Digital Network | — | 2000 | — |
| Aryana Film | — | — | 12 |
| As-Sahab | Pakistan | 2001 | 2 |
 ASA Film | Copenhagen | 1936 | 1 |
| Ascot Elite Entertainment Group | Zurich | 1928 | 1 |
| Ashmont Productions | Los Angeles | 1965 | — |
| Aska Film Productions | — | — | 5 |
| Askania Media | Berlin | 1997 | 1 |
| Aspartame Jack | — | — | 1 |
 Aspekt Telefilm | Hamburg | 1974 | 1 |
| Asre Talaei Studio | Tehran | 1951 | 27 |
| Assemblage Entertainment | Mumbai | December 2013 | 2 |
| Associated Argentine Artists | — | 1941 | 14 |
| Associated British Picture Corporation | London | 1928 | 173 |
 Associated Exhibitors | New York City | — | 2 |
| Association coopérative de productions audio-visuelles | Montreal | 6 February 1971 | 40 |
| Association of Malayalam Movie Artists | — | — | 1 |
| AST Studio | — | — | 1 |
| Asta Film | Copenhagen | December 2002 | 3 |
| AStory | Seoul | 2004 | 2 |
 Astrid Lindgren's World | — | 1981 | 3 |
| Astro Shaw | Technology Park Malaysia | 2005 | 8 |
| Astron-6 | Canada | 2007 | 3 |
| Asymmetrical Productions | California | 1993 | 1 |
| AT-Prod | Brussels | 1994 | 1 |
| Athenaeum Productions | United Kingdom | 2017 | 2 |
| Atlantic Entertainment Group | United States | 1974 | 4 |
| Atlas Film Company | — | — | 1 |
| ATNINE FILM | — | 22 May 1996 | — |
| Atomic Monster | United States | 2014 | 18 |
| ATR | — | 2015 | 1 |
| Attackers | Tokyo | 1996 | 1 |
 Attraction | — | 2002 | 3 |
 Attraction Images | Montreal | 2002 | — |
| Audiovision | — | 2002 | 3 |
| Audiovisual Archive of the Democratic and Labour Movement | — | — | 1 |
| August Entertainment | — | 1988 | 1 |
 Aurora Film Corporation | Kolkata | 1906 | 3 |
| Aurora Productions | Los Angeles | 1978 | 6 |
| Aurora Studios | Kamppi | 2020 | 5 |
| Australasian Films | — | — | 12 |
| Australian International Film Corporation | — | — | 3 |
| Australian Life Biograph Company | — | 1911 | 1 |
| Australian Photo-Play Company | — | — | 3 |
| Australian Union Conference of Seventh-day Adventists | — | 2001 | 1 |
| Automat Pictures | Los Angeles | 2000 | — |
 Autour de Minuit | Paris | 2001 | — |
| Ave Fenix Pictures Studios | Chicago, Los Angeles, Arizona | 2014 | 2 |
| Avenue B Productions | — | 2004 | 5 |
| Avex Music Creative | Tokyo | October 1997 | 1 |
| Avex Pictures | Tokyo | April 2014 | — |
| Avista Film | Munich | — | 2 |
| Avventura Films | — | — | 2 |
| Awesomeness | Los Angeles | 2012 | 4 |
 AXS TV | Denver | 2001 | 1 |
 Ay Yapım | Beşiktaş | 2005 | 5 |
| Aywon Film Corporation | — | — | 1 |
| Azar Film | — | — | 1 |
| Azhir Film | Tehran | — | 11 |
| Aziani | — | 2005 | 1 |
 AzTV | Baku | 14 February 1956 | 6 |
 Ánima Estudios | Mexico City | 2002 | 8 |