| M-production | 1st Tverskaya-Yamskaya Street | 1992 | 1 |
| M.H. Films Productions | — | — | 1 |
| Macalla Teoranta | Dublín | 1997 | 1 |
 MacGillivray Freeman Films | Laguna Beach | 1963 | 2 |
| MACT Productions | París | — | 3 |
| Maddock Films | Bombay | 2010 | 13 |
| Madefor Film | Berlín | 2020 | — |
| MadLove Film Factory | — | — | 1 |
| Madman Entertainment | Melbourne | 1996 | 5 |
| Madragoa Films | — | — | 5 |
| Madras Talkies | Chennai | 1995 | 19 |
| Maecenas Film- und Fernsehproduktion | Múnich | — | 1 |
 Maeda Corporation | Tokio | 1919 | 1 |
 Mafilm | Budapest | 19 de agosto de 1948 | 27 |
| MAG Yapım | provincia de Uşak | 2023 | 1 |
| Magellan Films | Bruselas | — | 1 |
| Magic Stone Productions | — | — | 2 |
 Magic TV | París | 29 de marzo de 1993 | — |
| Magnolia Pictures | Dallas | 2001 | 6 |
| Magnéto Presse | Boulogne-Billancourt | 24 de julio de 2008 | 1 |
| Magouric Productions | París | 2 de abril de 1993 | 2 |
 Magyar Televízió | Budapest | mayo 1957 | 4 |
 Mahaka Media | Yakarta | 1992 | 1 |
 Maho Film | Suginami | 29 de mayo de 2018 | — |
| Mahtab Film | — | — | 3 |
 Mainz University of Applied Sciences | — | 1971 | 1 |
 Maison 4:3 | Montreal | 16 de julio de 2014 | 1 |
 Majestic Films International | Berlín | 2006 | 2 |
| Majestic Motion Picture Company | — | — | 1 |
 Makido film | Viena, Weimar, Meidling | 2011 | — |
| Making Movies | Torkkelinmäki | 1996 | 12 |
| Maljack Productions | — | — | 1 |
 Malpaso Productions | Burbank | 1967 | 45 |
| Malva | Lehedzyne | 1993 | 1 |
| Mamahyhotala | Kiev | 2012 | — |
| Mammoth Screen | — | 24 de octubre de 2006 | — |
| Manchester Films | París | 2008 | 2 |
| Mandalay Pictures | condado de Los Ángeles, Estados Unidos | 27 de mayo de 1995 | 17 |
| Mandarin Films Distribution | Causeway Bay | 1991 | 4 |
| Mandate Pictures | Santa Mónica | 2005 | 22 |
| Manderlay | — | — | 1 |
| Mandragora Movies | — | — | 1 |
 Manglobe | Suginami | 2002 | 1 |
| Manifold Productions | — | 1977 | 1 |
| Manoli Films | Filipinas | 2000 | 1 |
| Mantarraya Producciones | Ciudad de México | 1998 | — |
| Man’s Films | — | — | 5 |
| Maoyan entertainment | Pekín | julio 2015 | 2 |
 MAPPA | Nakano | 14 de junio de 2011 | 4 |
| Marcusfilm | Oslo | — | 7 |
| Marfa Peach Company | — | — | 1 |
| Marlene Film Production | Praga | 16 de junio de 2014 | 3 |
| Mars Entertainment | Bouvignes-sur-Meuse | — | 1 |
| Mars Films | París | 22 de junio de 2007 | 11 |
| Marv Films | Londres | 1997 | 15 |
 Marvel Entertainment | Nueva York | junio 1998 | 30 |
 Marvel Studios | Burbank | 1993 | 44 |
 Mason Ewing Corporation | Los Ángeles | 2011 | — |
| Massa d’Or Produccions | Barcelona | 1992 | 1 |
| Master-film | Moscú | 1996 | — |
| Matador Pictures | Londres | — | 1 |
| Matchbox Pictures | Sídney | 2008 | — |
 Matchstick Productions | Crested Butte | — | — |
 Mattel | El Segundo | 1945 | 7 |
 Mattel Films | El Segundo | septiembre 2018 | 3 |
| Maurice Tourneur Productions | — | 1918 | 1 |
| Maverick | Burbank | 1992 | 1 |
| Maverick Films | Burbank | 1992 | 11 |
| Max Productions | — | — | 1 |
| Maxam | — | 24 de junio de 1991 | 1 |
 Maxim | Estados Unidos | mayo 1995 | 1 |
 Maximum Effort | Nueva York | 2018 | 4 |
| Maxlab Cinemas and Entertainments | Cochín | 2009 | 1 |
 MAXstream | — | junio 2018 | 1 |
 Maz & More TV Produktion | Mediaspree | 2009 | — |
| Maïa Films | — | — | 1 |
| MBC Game | — | — | — |
| MBK Entertainment | Yeoksam-dong | 2006 | 1 |
| MBP | Múnich | — | 1 |
| MCA Television | — | 1951 | 1 |
 McGraw-Hill Education | Nueva York | 1888 | 1 |
| Mechanix Film | Hvaler | 15 de agosto de 2009 | 1 |
| Media Asia Entertainment Group | Hong Kong | 1994 | 22 |
| Media Asia Film Distribution Company | — | 5 de octubre de 1993 | 1 |
| Media Asia Films | — | 12 de octubre de 1993 | 23 |
| Media Dreams | Chennai | 1997 | — |
 Media Factory | Shibuya | diciembre 1986 | 1 |
| Media Home Entertainment | Los Ángeles | 1978 | 3 |
| MediaPro Pictures | Buftea | abril 1998 | 2 |
| MediaPro Studios | Buftea | 1957 | 8 |
 Mediaset | Milán | 1978 | — |
 Mediaset España | Madrid | 10 de marzo de 1989 | 8 |
| Mediaset Premium | — | 20 de enero de 2005 | 1 |
| Mediawan Finland | Helsinki | 2003 | 1 |
 Medienboard Berlin-Brandenburg | Potsdam | 2004 | 5 |
| Medienprojekt Wuppertal | — | — | 1 |
| Medieoperatørene | Oslo | 1995 | 6 |
| Medset Film | — | 2016 | 1 |
| Medyapım | Estambul | — | 3 |
| Mefistofilm | — | — | 10 |
 Mega Channel | — | 1989 | 2 |
| Mehboob Studio | Bombay | 1954 | 8 |
| Mei Ah Entertainment | Tseung Kwan O INNOPARK | 1984 | 5 |
| Melampo Cinematografica | — | 1991 | 4 |
| Melenny Productions | — | — | 4 |
| Melnitsa Animation Studio | San Petersburgo | 1999 | 12 |
| Melodie Film | — | — | 3 |
| Memento Distribution | París | 4 de marzo de 2003 | 1 |
| Memfis Film | — | 1989 | 16 |
| Memfis Film Rights5 | Estocolmo | 4 de marzo de 2004 | 1 |
 Men.com | — | 2003 | 1 |
 Menuet | — | — | 15 |
| Mer Film | — | 2011 | 3 |
| Mercenary Pictures | — | — | 4 |
| Merchant Ivory Productions | Londres | 1961 | 19 |
| Merit Motion Pictures | Winnipeg | 1988 | — |
| Merkur Film | Oslo | 15 de agosto de 1936 | 9 |
| Merryland Studio | Nemom | 1951 | 5 |
| Messercola Drama & Soap | — | — | 3 |
| Messter Film | Berlín | 1897 | 19 |
| Met Film Production | Londres | — | 1 |
| Meta Film Stockholm | Estocolmo | 2013 | 2 |
 Metahaven | — | — | 1 |
| Meteor Film | — | 1939 | 2 |
| Meteor Studios | Montreal | 2001 | — |
| Meteoriit | Tallin | 14 de enero de 2013 | 4 |
| Method Animation | Los Ángeles | 2008 | 8 |
| Metro | Chatsworth | 1987 | 1 |
 Metro International | Estocolmo | 1995 | 1 |
 Metro-Goldwyn-Mayer | Los Ángeles | 17 de abril de 1924 | 1.347 |
| Metro-Goldwyn-Mayer cartoon studio | Culver City | 1937 | 1 |
 Metromuster | Barcelona | 2010 | 1 |
 Metronom Studio | Moscú | — | 1 |
| Metropolitan Filmexport | París | 1978 | 4 |
 Metropolitan Opera House | — | — | 1 |
 MFE - MediaForEurope | Cologno Monzese, Ámsterdam | 1993 | 5 |
 MGA Entertainment | Los Ángeles | 1979 | 2 |
| MIA FILM | Praga | 25 de febrero de 2010 | 1 |
| Micha's Films | — | 2009 | 1 |
 Michael Jacobs Productions | Walt Disney Studios | 1985 | — |
| Michigan films | Bruselas | febrero 2006 | — |
| Micro_scope | Montreal | 2002 | 10 |
 Middle East Broadcasting Center | Riad | 18 de septiembre de 1991 | 1 |
| Miko Lee Productions | — | — | 1 |
 Mikros Image | — | 1985 | 2 |
 Milano-Films | — | 1908 | 24 |
| Miles Films | — | — | 8 |
| Milestone Production | — | — | 1 |
| Milk and Honey Pictures | Praga | 29 de febrero de 2000 | 1 |
| Mill Film | — | — | 1 |
| Millar/Gough Ink | Irvine | 1995 | 1 |
| Millennium Film Oy | — | — | 1 |
| Miller-Boyett Productions | — | 2015 | 3 |
| Mills James | — | 1984 | 1 |
| Minds Eye Entertainment | Regina | 1986 | 5 |
 Minerva Film | — | 1912 | 14 |
| Minerva Film | Copenhague | — | 1 |
| Minerva Pictures | Roma | 1953 | 4 |
| Minerva-Tonfilm | Berlín | — | — |
 Mingxing Film Company | Shanghái | febrero 1922 | 4 |
| Ministerio de Cultura de Egipto | Futura capital de Egipto | 1958 | 1 |
 Ministerio de Cultura de la Federación Rusa | Moscú | 12 de mayo de 2008 | 4 |
 Ministerio de Cultura de Rumania | — | 22 de enero de 1862 | 1 |
| Ministerio de Cultura y Información de Kazajstán | Astaná | 29 de octubre de 2004 | 1 |
 Ministerio del Imperial para la Ilustración Popular y Propaganda | Ordenspalais | 1933 | 1 |
| Minnow Mountain | Austin | — | 1 |
| Minor Film | — | 1996 | — |
| Mint Motion Pictures | Estambul | 1996 | 2 |
| Minxin Film Company | Shanghái | 1922 | 1 |
| Mirabai Films | Nueva York | 1989 | 4 |
 Miramax | Toronto, Estados Unidos, Los Ángeles | 1979 | 163 |
| Miramón Mendi | — | 1988 | — |
| Mirisch Company | Los Ángeles | 1957 | 48 |
 Mirror Films | — | 23 de septiembre de 1915 | — |
 Miso Film | Copenhague | 2004 | 3 |
| Mission Pictures International | — | 2008 | 2 |
| Miyu Productions | — | mayo 2009 | 1 |
| Mjölk Production | — | — | 1 |
| MMC Movies | Colonia | — | 2 |
| MMG | Asse | — | 1 |
| MNP Entreprise | — | 2000 | 1 |
| MOD Producciones | Madrid | 2007 | 22 |
| Modern Studios | Estocolmo | — | 1 |
| Modern Theatres | Salem | 1935 | 15 |
| Mofac Studio | — | — | 1 |
| Mohawk Productions | — | 1991 | — |
| Moiré Films | — | — | 1 |
 Mojang Studios | Estocolmo | 2009 | 1 |
| MOKÉP | Budapest | julio 1986 | 1 |
| Monday Media | Copenhague | 2008 | — |
| Mongolkino | Songino Khairkhan | 1935 | 58 |
 Monkey Pack Films | Boulogne-Billancourt | — | 1 |
| MONOfilm | — | 1993 | 1 |
 Monogram Pictures | Nueva York, Los Ángeles | 1931 | 155 |
| Monsoon Films | Daca | 2010 | 1 |
| Monsta Studios | Malasia | 15 de septiembre de 2009 | 1 |
| Monumental Pictures | Moscú | 2008 | 8 |
| Moonbow Pictures | — | 19 de noviembre de 2018 | 1 |
 More4 | Londres | 2005 | 2 |
| Morena Films | Madrid | 1999 | 22 |
| Morgan Creek Productions | Santa Mónica | 1988 | 45 |
 Morgana film | Roma | 1914 | 3 |
 Moscow State Puppet Theatre named after Sergey Obraztsov | — | 1931 | 1 |
 Mosfilm | Moscú, Mosfilmovskaya Street | 30 de enero de 1920 | 997 |
 Moskito Television | Helsinki | 18 de junio de 1999 | — |
| Mostra Cine | — | 2018 | 2 |
| Motel Films | — | 1995 | 7 |
| Moteur s'il vous plaît | París | 2005 | 2 |
| Mother Production | París | 31 de enero de 2011 | 2 |
| Motion Blur | Oslo | 2012 | 2 |
| Motion Pictures Entertainment | Londres | 1968 | 1 |
| Motlys | Oslo | — | 18 |
 Motovun Film Festival | — | 1999 | 1 |
| Motto Pictures | Brooklyn | 2009 | 2 |
| Mount Street Film | — | — | 1 |
| Mountain River Films | Katmandú | 2010 | 1 |
| Move Movie | París | 15 de julio de 2001 | 2 |
| Movie Central | Toronto | febrero 1983 | 1 |
| MovieMakers | — | — | 7 |
| Moviemax | Roma | 2001 | 3 |
| MoviePlus | — | 2005 | 1 |
| Movimento Production | París | — | 2 |
| Movimiento pánico | — | 1962 | 1 |
| Moving Picture Company | Londres | 1970 | 8 |
| Moving Picture Institute | Nueva York | — | 7 |
| Moving Puppet | — | 9 de octubre de 2006 | — |
 Movistar Plus+ | Tres Cantos | 8 de julio de 2015 | 31 |
| MPH Entertainment, Inc. | Estados Unidos | 1996 | — |
| MPI Media Group | Orland Park | 1976 | 4 |
| MRB Productions | — | — | 2 |
 MRC | Beverly Hills | 2006 | 30 |
| MRP Matila Röhr Productions | Kaapelitehdas, Karis | 30 de enero de 1991 | 19 |
| MTL Maxfilm | Varsovia | 1992 | 1 |
| MTM Enterprises | — | 1969 | 1 |
 MTV | Nueva York | agosto 1981 | 3 |
| MTV Channel | Colombo | 1992 | 1 |
 MTV Films | Los Ángeles | 1996 | 42 |
 MUBI | Londres | 2007 | 3 |
| Mulakuppadam Films | — | 2007 | — |
| Mult.ru | San Petersburgo | — | — |
| Multi Film | — | 1999 | — |
| Multifilmes | Mairiporã | 1952 | 1 |
| Multivision Plus | Yakarta | 18 de abril de 1990 | 22 |
| Mundial Film | Barcelona | 1925 | 1 |
| Muse Entertainment Enterprises | Montreal | 1998 | 4 |
 Museo del Louvre | — | 10 de agosto de 1793 | 3 |
| Mushroom Pictures | — | — | 3 |
 Music Box Films | Chicago | 2007 | 2 |
 Mutant Enemy Productions | Los Ángeles | 1996 | 2 |
| Mutant Koala Pictures | — | — | 1 |
| MY TV Productions | — | 2005 | — |
| Myriad Pictures | Santa Mónica | 1999 | 8 |
 Mystic Story | Seúl | 2001 | 2 |
| Mythberg Films | Budapest | — | 1 |
| Myung Films | Jongno-gu | 1995 | 33 |
| Méditerranée Cinéma Productions | — | — | 1 |