| A Band Apart | Los Angeles | 1991 | 13 |
| A Film Eesti | — | 1994 | — |
| A Private View | Ghent | May 24, 1994 | 9 |
| A Stern Talking To | — | — | 1 |
| A'YoY | — | 1994 | 3 |
| A+E Global Media | New York City | 1984 | 1 |
| A-1 Pictures | Suginami | May 9, 2005 | 3 |
| A-Film | Amsterdam | 1999 | 1 |
| A. Film A/S | Copenhagen | 1988 | 20 |
| A.A. Les Films Belges | — | — | 1 |
| A.GI.DI. | — | — | 2 |
| A/S Palladium | Copenhagen | 1919 | 2 |
| A24 | New York City, Los Angeles | August 20, 2012 | 44 |
| AA Visioon Stuudio | — | 1997 | — |
| Aafa-Film | Berlin | 1918 | 18 |
| Aalto University School of Arts, Design and Architecture | — | 1871 | 1 |
| Aardman Animations | Bristol | April 12, 1972 | 17 |
| Aas Film | — | — | 8 |
| AB Bild & Ton | — | — | 2 |
| AB Productions | Saint-Denis | 1977 | — |
| AB Stockholmfilm | — | 1937 | 1 |
| AB Svensk talfilm | — | — | 16 |
| AbbottVision | London | 2008 | 2 |
| ABC News | Upper West Side | June 15, 1945 | 1 |
| ABC Signature | Burbank | March 21, 1985 | 3 |
| AbemaNews | Tokyo | April 2015 | — |
| AbemaTV | Udagawachō, Maruyamachō, Shinsenchō | April 2015 | — |
| Abhishek Agarwal Arts | Hyderabad | 2018 | 1 |
| Abhishek Pictures | Hyderabad | 2014 | 3 |
| ABKCO Records | New York City | 1961 | 2 |
| About Film | Seoul | — | 6 |
| Above Average Productions | New York City | — | 1 |
| ABS-CBN Corporation | Quezon City | June 13, 1946 | 38 |
| Absolute Entertainment | Upper Saddle River | 1986 | 1 |
| Abu Dhabi Media | Abu Dhabi | 2007 | 1 |
| Abú Media | Indreabhán | 2000 | 1 |
| Academy of Dramatic Art | Zagreb | 1896 | 1 |
| Academy of Theatre, Radio, Film and Television | — | 1945 | 1 |
| Access Industries | New York City | 1986 | 3 |
| ACE FACTORY | — | November 14, 2018 | — |
| Achab Film | Rome | — | 1 |
| Acropolis Entertainment | — | October 6, 2006 | 1 |
| Act III Broadcasting | — | 1986 | 1 |
| Act III Communications | — | 1985 | 1 |
| Act III Productions | — | — | 1 |
| Action International Pictures | Culver City | 1986 | 2 |
| Ad Vitam Distribution | France | 1998 | 1 |
| Adam & Eve | Hillsborough | March 1971 | 18 |
| Adam Film | — | — | 1 |
| Adam's World Of Imagination | Kerala | 2015 | 1 |
| Adastra Films | Cannes | 2008 | 4 |
| Addict Films | Oslo | — | 1 |
| Adelaide Productions | Culver City | 1993 | 1 |
| Adhadhu | Malé | 2011 | 1 |
| Adness Entertainment | Los Angeles | 2007 | — |
| Adult Swim | Atlanta | September 1999 | 3 |
| Advanced Action Videos | Redding | May 7, 2003 | 1 |
| Aegean Oil S.A. | — | — | 1 |
| Aes-Nihil Productions | — | — | 1 |
| Aetios Productions | Saint-Sauveur | — | 1 |
| Affirm Films | Culver City | 2008 | 8 |
| AFI Conservatory | — | 1969 | 1 |
| AFIFA | Wiesbaden | 1921 | — |
| Afro-Centric Productions | Boston | 1998 | — |
| After the Wedding | — | — | 1 |
| Agat Films & Cie – Ex Nihilo | Paris | June 30, 1986 | 30 |
| Agencja Produkcji Filmowej | — | 1991 | 2 |
| Agitator | — | — | 1 |
| AGTV Productions | — | 2011 | — |
| Ahotsa.info | — | 2014 | 1 |
| Aim Rain Limited | Middlesex | May 21, 1993 | 1 |
| Air Productions | Paris | 1993 | — |
| Ajoz Films | Saint-Denis | 1981 | — |
| AKOM | Seoul | 1985 | 1 |
| Akson Studio | — | — | 5 |
| Aksoy Film Production | Istanbul | — | 2 |
| Al Arabia Cinema Production & Distribution | Giza | 2000 | 2 |
| Al Jazeera Balkans | Sarajevo | 2011 | 1 |
| Al Jazeera Documentary Channel | — | 2007 | 1 |
| Ala Bianca Group S.r.l. | Modena | 1990 | 1 |
| Alan Landsburg Productions | — | 1971 | 1 |
| Alasti Kino | — | 2009 | 5 |
| Alatas Films | — | — | 1 |
| Alba Sotorra Productions | — | — | 2 |
| Albafilm-Tirana | Tirana | 1945 | 8 |
| Albanian General Vision | — | — | 1 |
| Albert Bonniers Förlag | Stockholm | 1837 | 1 |
| Alberts Frères | Breda | 1899 | — |
| Alcon Entertainment | Los Angeles | 1997 | 32 |
| Alcove Entertainment | London | 2005 | 2 |
| Aldo, Giovanni & Giacomo | — | — | 1 |
| ALEF Film & Media Group | Bratislava | 1997 | 1 |
| Alert film | Oslo Municipality | — | 1 |
| Alexander Nanau Production | — | — | 1 |
| Alexandra Film | Tallinn | January 30, 2009 | 3 |
| Alfa Pictures | Barcelona | — | 1 |
| Algefa | Berlin | 1936 | 1 |
| Ali n' Productions | Casablanca | — | 3 |
| Alien Films Entertainment | — | — | 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 | — |
| Allarts | — | — | 1 |
| Allegro Film | Vienna | — | 7 |
| Alliance Atlantis | Toronto | 1998 | 17 |
| Alliance Films | Montreal | 2007 | 15 |
| Allied Filmmakers | — | 1985 | 9 |
| AllMusic | — | 1991 | 1 |
| Allspark | Burbank | March 6, 2009 | 6 |
| Allspark Pictures | Burbank | May 2008 | 1 |
| Alpha Films | — | — | 1 |
| Alpha France | Paris | 1966 | 4 |
| Alpha Group Company | Shantou | 1993 | — |
| Alpha-i | Banani (neighbourhood) | — | 1 |
| AlphaVille Pictures Copenhagen | — | 2003 | 2 |
| Alquimia Cinema | Madrid | — | 1 |
| Alta Films | Madrid | — | 4 |
| Alta Vista | — | — | 1 |
| AltaVista | Palo Alto | 1994 | 2 |
| Altitude Film | — | 2012 | 4 |
| Alvernia Studios | — | — | 1 |
| AM Television | — | 2012 | 1 |
| Amaco Investments | — | — | 1 |
| Amal Neerad Productions | Ernakulam | 2012 | 2 |
| Amalga | Montreal | — | 2 |
| Amanah Surga Productions | — | — | 2 |
| Amaru Entertainment | Atlanta | 1997 | 1 |
| Amazon | Seattle | July 5, 1994 | 1 |
| Amazon MGM Studios | Culver City | 2010 | 38 |
| Amazon Prime Video | United States | September 7, 2006 | 7 |
| Amazone | — | April 1988 | — |
| Amber Films | — | 1968 | 1 |
| Ambient Entertainment | Hanover | October 11, 1999 | 1 |
| Amblimation | London | May 1989 | 3 |
| American Broadcasting Company | New York City | October 12, 1943 | 26 |
| American Broadcasting-Paramount Theatres, Inc. | 1501 Broadway | November 15, 1949 | 1 |
| American Film Company | — | 2008 | 2 |
| American International Pictures | Los Angeles | 1954 | 70 |
| American Society of Civil Engineers | Reston | 1852 | 1 |
| Amicus Productions | Shepperton | 1960 | 23 |
| Amigos Creations | Hyderabad | 1999 | 3 |
| Amiguetes Entertainment | — | 1994 | 4 |
| Amitabh Bachchan Corporation | Mumbai | 1995 | 3 |
| AMOS Pictures | — | — | 1 |
| Amrion | Tallinn | 2003 | 9 |
| Anagram Produktion | Lund | 2001 | 8 |
| Anand Pandit Motion Pictures | Mumbai | — | 5 |
| Anatman Films | — | — | 1 |
| Anatman Pictures | — | 2013 | 5 |
| Anchor Bay Entertainment | Beverly Hills | 1985 | 2 |
| And Pictures | Ebisu-Minami | May 13, 2013 | 2 |
| ANDMARQ | — | September 8, 2015 | 2 |
| Andscape | — | — | 1 |
| Angel Digital Pvt Ltd | — | — | 1 |
| Angels Broadcast Television | Los Angeles | 1985 | — |
| Anglo-Amalgamated | United Kingdom | 1942 | 8 |
| Anima Vitae | Helsinki | March 6, 2000 | 2 |
| Animafilm | Sector 3 | 1964 | 1 |
| Animagrad | Kyiv | 2012 | 2 |
| Animal Logic | Sydney | 1991 | 8 |
| Animal Planet | Silver Spring | October 1996 | 1 |
| Animex | Puebla | 2000 | 4 |
| Animoon | — | — | 1 |
| Animose Studio | Moscow | 1999 | — |
| Aniplex | Rokubanchō | September 1995 | 1 |
| Ankush Hazra Motion Pictures | — | August 17, 2022 | 2 |
| Annapurna Studios | Hyderabad | 1975 | 32 |
| ANS Productions | Istanbul | — | 3 |
| Antenne 2 | — | 1975 | 3 |
| Anti-Corruption Foundation | — | September 9, 2011 | 4 |
| Antidote Films | New York City | — | 1 |
| Anurag Kashyap Films | Mumbai | 2009 | 7 |
| Anša Epnera studija AVE | — | — | 2 |
| AP Films | Slough Trading Estate | 1957 | 1 |
| Apollo Pictures | New York | 1917 | — |
| Apologetics Press | Montgomery | 1979 | 1 |
| Appaloosa Films | Paris | 2009 | 4 |
| Appalshop | — | 1969 | 2 |
| Apparition | Manhattan | August 6, 2009 | 2 |
| Appian Way | — | 311 BC | 1 |
| Appian Way Productions | West Hollywood | 2004 | 14 |
| Apple Corps | London | 1967 | 2 |
| Apple Film Production | Warsaw | 1990 | 1 |
| Apple Original Films | — | — | 3 |
| APPP | Suginami | 1984 | 3 |
| Aquarius Films | — | — | 1 |
| Araba Films | Vitoria-Gasteiz | — | — |
| Arad Productions Inc. | — | — | 1 |
| Aragón TV | Aragon | 2006 | 1 |
| Arc Media | — | — | 1 |
| Arca-Winston Films Corp. | — | — | 1 |
| Arcana Studio | Coquitlam | 2004 | 1 |
| Archaia Entertainment | Hollywood | 2002 | 1 |
| Archant | Norwich | 1845 | 1 |
| Archie Comics | New York, Pelham | 1939 | 1 |
| Archipel 33 | Paris | 1988 | 2 |
| Ardmore Studios | — | — | 2 |
| Arena Films | — | — | 6 |
| Argentina Sono Film | — | 1933 | 114 |
| Argo Pictures | — | February 14, 1990 | 1 |
| Argonon | London | 2011 | — |
| Argos Films | — | 1949 | 16 |
| Argosy Films | — | — | 2 |
| Argus Film Produktie | Amsterdam | — | 1 |
| Aries Cinematográfica Argentina | Buenos Aires | 1956 | 43 |
| Ark Resources Entertainment | — | 2002 | 1 |
| Arlong Productions | Barcelona | — | 2 |
| Armenakob | — | October 5, 2000 | — |
| Armenfilm | Armenia | April 16, 1923 | 94 |
| Armenia 1 | Yerevan | November 29, 1956 | 1 |
| Army Pictorial Service | — | — | 1 |
| ARP Sélection | Paris | January 20, 1984 | 6 |
| Arpa Films | Barcelona | — | 1 |
| ARRAY | — | 2010 | 1 |
| Arrow Productions | — | — | 2 |
| Arrow-Film | Oslo | 1964 | 1 |
| Arsmedia | — | — | 1 |
| Art Aia - La Dolce Berlin | — | — | 1 |
| Art Aia-Creatives / In / Residence | Sesto al Reghena | — | 1 |
| Art et essai | Montreal | — | 6 |
| Art for The World | Geneva | 1995 | 1 |
| Art Pictures Studio | Moscow | 1992 | 17 |
| Arte | Strasbourg | — | 76 |
| Arte France | Issy-les-Moulineaux | June 2, 1986 | 43 |
| Arte France Cinéma | Issy-les-Moulineaux | August 30, 1991 | 89 |
| Arte Radiotelevisivo Argentino | Buenos Aires | December 22, 1989 | 4 |
| Arthouse Traffic | — | 2003 | — |
| Artis Film | Bucharest | — | 1 |
| Artisan Entertainment | United States, Santa Monica | 1982 | 20 |
| Artist Studio | South Korea | — | 1 |
| Artists Equity | — | 2022 | 5 |
| Artland | Musashino | September 14, 1978 | 1 |
| Arts Council England | — | 1994 | 8 |
| Arts Council of Wales | Wales Millennium Centre | 1946 | 1 |
| Artza Productions | — | 2006 | 1 |
| Artémis Productions | — | 1994 | 11 |
| ARY Digital Network | — | 2000 | — |
| ARY Films | Karachi | — | 2 |
| Aryana Film | — | — | 12 |
| Arzu Film | — | — | 33 |
| As Films Producción | — | — | 1 |
| ASA Film | Copenhagen | 1936 | 1 |
| ASA Film Production | Hellerup | July 25, 1994 | 3 |
| Ascot Elite Entertainment Group | Zurich | 1928 | 1 |
| Ashmont Productions | Los Angeles | 1965 | — |
| Aska Film Productions | — | — | 5 |
| Askania Media | Berlin | 1997 | 1 |
| Asmik Ace Entertainment | Tokyo, Frederikshavn | 1985 | 7 |
| Aspartame Jack | — | — | 1 |
| Aspekt Telefilm | Hamburg | 1974 | 1 |
| Asre Talaei Studio | Tehran | 1951 | 27 |
| 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 | February 6, 1971 | 40 |
| Association of Malayalam Movie Artists | — | — | 1 |
| AST Studio | — | — | 1 |
| Astor Pictures | New York City | 1930 | 1 |
| AStory | Seoul | 2004 | 2 |
| Astral Media | Montreal | 1961 | 6 |
| Astro Shaw | Technology Park Malaysia | 2005 | 8 |
| Asymmetrical Productions | California | 1993 | 1 |
| AT&T SportsNet Rocky Mountain | Denver | 1988 | — |
| AT-Prod | Brussels | 1994 | 1 |
| Atlantique Productions | Paris | 1982 | — |
| Atlas Entertainment | Los Angeles | 1995 | 15 |
| Atmo Media Network | — | 1999 | 3 |
| Atmo Produktion | Stockholm | — | 2 |
| ATO Records | New York City | 2000 | 1 |
| Atomfilm | — | — | 1 |
| Atomic Monster | United States | 2014 | 18 |
| Atopia | Montreal | 2000 | 2 |
| Atria | — | 1953 | 1 |
| Attackers | Tokyo | 1996 | 1 |
| Attraction Images | Montreal | 2002 | — |
| ATV | Russia | September 15, 1988 | — |
| Audax Films | Santa Monica | 2013 | 1 |
| Audiovision | — | 2002 | 3 |
| Audiovisual Archive of the Democratic and Labour Movement | — | — | 1 |
| August Cinema | Thiruvananthapuram | 2011 | 8 |
| August Entertainment | — | 1988 | 1 |
| August First Film Studio | Beijing | 1952 | 35 |
| Aurora Productions | Los Angeles | 1978 | 6 |
| Aurora Studios | Kamppi | 2020 | 5 |
| Aurum Film | — | 2015 | 6 |
| Australian Children's Television Foundation | Australia | 1982 | 1 |
| Australian Film Commission | — | May 5, 1975 | 7 |
| Australian Film Development Corporation | — | August 17, 1970 | — |
| Australian Film Finance Corporation Limited | — | July 1988 | 14 |
| Australian International Film Corporation | — | — | 3 |
| Australian Life Biograph Company | — | 1911 | 1 |
| Australian Union Conference of Seventh-day Adventists | — | 2001 | 1 |
| Automatic Vaudeville Studios | — | 1998 | — |
| Autour de Minuit | Paris | 2001 | — |
| AVA Productions | — | 2012 | — |
| Avant-Film | Oslo | April 28, 1959 | 1 |
| Avatar Studios | — | 2021 | 1 |
| Avaton Films | — | 2017 | 1 |
| Avex Group | Izumi Garden Tower | April 11, 1988 | 2 |
| Avex Music Creative | Tokyo | October 1997 | 1 |
| Avex Pictures | Tokyo | April 2014 | — |
| Avista Film | Munich | — | 2 |
| AVM Productions | Vadapalani | 1945 | 60 |
| AVRO | Hilversum | 1923 | 9 |
| Avventura Films | — | — | 2 |
| AXS TV | Denver | 2001 | 1 |
| Ayngaran International | London | 1987 | 8 |
| Aywon Film Corporation | — | — | 1 |
| Azad Azerbaijan TV | Baku | 2000 | 1 |
| Azar Film | — | — | 1 |
| Azerbaijan State Film Fund | Baku | December 22, 1993 | — |
| Azerbaijanfilm | Baku | April 28, 1923 | 98 |
| Aziani | — | 2005 | 1 |
| AzTV | Baku | February 14, 1956 | 6 |
| À Punt Mèdia | Burjassot | April 5, 2017 | 1 |