| M&M Productions | Copenhagen | 1995 | 5 |
| M.H. Films Productions | — | — | 1 |
| M6 | Neuilly-sur-Seine | March 1987 | 9 |
| Mac Guff | Paris | 1986 | — |
| Macalla Teoranta | Dublin | 1997 | 1 |
| MacGillivray Freeman Films | Laguna Beach | 1963 | 2 |
| Maddock Films | Mumbai | 2010 | 13 |
| Madefor Film | Berlin | 2020 | — |
| Madras Talkies | Chennai | 1995 | 19 |
| Maecenas Film- und Fernsehproduktion | Munich | — | 1 |
| Maeda Corporation | Tokyo | 1919 | 1 |
| Maestranza Films | Seville | — | 4 |
| MAG Yapım | Uşak Province | 2023 | 1 |
| Magenta Light Studios | Los Angeles | March 8, 2024 | 1 |
| Magic Light Pictures | London | 2003 | 6 |
| Magic TV | Paris | March 29, 1993 | — |
| Magnolia Pictures | Dallas | 2001 | 6 |
| Magnéto Presse | Boulogne-Billancourt | July 24, 2008 | 1 |
| Mago film | — | — | 2 |
| Magyar Televízió | Budapest | May 1957 | 4 |
| Mahtab Film | — | — | 3 |
| Mainframe Films and Television Productions | Lagos | 1991 | 1 |
| Mainz University of Applied Sciences | — | 1971 | 1 |
| Maipo Film | Oslo Municipality | September 5, 2001 | 20 |
| Makido film | Vienna, Weimar, Meidling | 2011 | — |
| Making Movies | Torkkelinmäki | 1996 | 12 |
| Makino Film Productions | — | 1923 | 1 |
| Makino Production | — | June 1925 | — |
| Maljack Productions | — | — | 1 |
| Mammoth Screen | — | October 24, 2006 | — |
| Man of Action Studios | Glendale | 2005 | 2 |
| Manchu Entertainment | Hyderabad | — | 1 |
| Mandalay Entertainment | — | 1995 | 14 |
| Mandalay Pictures | Los Angeles County, United States | May 27, 1995 | 17 |
| Mandarin et Compagnie - Mandarin Télévision | Paris | 1995 | 28 |
| Mandarin Films Distribution | Causeway Bay | 1991 | 4 |
| Manderlay | — | — | 1 |
| Mandeville Films | Burbank | 1994 | 21 |
| Mandragora Movies | — | — | 1 |
| Manex Visual Effects | Alameda | — | 1 |
| Manfred Durniok Produktion | Berlin | — | 1 |
| Manga Entertainment | London | 1987 | 1 |
| Manga Films | — | — | 4 |
| Manglobe | Suginami | 2002 | 1 |
| Manifold Productions | — | 1977 | 1 |
| Mano Film | Zurich | 2001 | 1 |
| Manoli Films | Philippines | 2000 | 1 |
| Manslaughter | — | — | 1 |
| ManyVids | — | 2014 | 1 |
| Man’s Films | — | — | 5 |
| Maoyan entertainment | Beijing | July 2015 | 2 |
| MAPPA | Nakano | June 14, 2011 | 4 |
| Maran Film GmbH | Stuttgart, Baden-Baden | 1963 | — |
| March Entertainment | Toronto | 1996 | — |
| Marea Films S.A. | Madrid | — | 1 |
| Marfa Peach Company | — | — | 1 |
| Mari Film | — | 2007 | 4 |
| Mariska X Productions | — | 2014 | 3 |
| Mark Goodson Productions | Hollywood, New York City | May 1946 | 2 |
| Mars Entertainment | Bouvignes-sur-Meuse | — | 1 |
| Mars Entertainment Group | — | 2001 | 2 |
| Mars Films | Paris | June 22, 2007 | 11 |
| Mars Media Entertainment | Moscow | November 2011 | 4 |
| Mars-Film | Munich, Berlin | — | 1 |
| Marv Studios | London | 1997 | 15 |
| Marvel Animation | Glendale | January 25, 2008 | 6 |
| Marvel Productions | Hollywood | 1981 | 3 |
| Mary Pickford Film Corporation | — | — | 8 |
| Marza Animation Planet | Tokyo | 2010 | 5 |
| Massa d’Or Produccions | Barcelona | 1992 | 1 |
| Master-film | Moscow | 1996 | — |
| Matador Pictures | London | — | 1 |
| Matchbox Pictures | Sydney | 2008 | — |
| Matt Tolmach Productions | — | — | 1 |
| Mattel Films | El Segundo | September 2018 | 3 |
| Mattel Television | United States | March 30, 2016 | 1 |
| Matthias-Film | Berlin | — | — |
| Maven Screen Media | — | May 2011 | 9 |
| Maverick | Burbank | 1992 | 1 |
| Max Pictures | Duren Tiga | 2011 | 11 |
| Max Productions | — | — | 1 |
| Maxam | — | June 24, 1991 | 1 |
| Maxim | United States | May 1995 | 1 |
| Maxima Pictures | Duren Tiga | May 7, 2004 | 13 |
| Maximum Effort | New York City | 2018 | 4 |
| Maxlab Cinemas and Entertainments | Kochi | 2009 | 1 |
| Maze Pictures | Munich | 2015 | 3 |
| MBC Game | — | — | — |
| MBC Group | Riyadh | September 18, 1991 | 1 |
| MBC Shahid | Riyadh | 2011 | — |
| MBK Entertainment | Yeoksam-dong | 2006 | 1 |
| MBS | Chayamachi, Kita-ku, Osaka | July 28, 2016 | 2 |
| Mechanix Film | Hvaler Municipality | August 15, 2009 | 1 |
| Media Asia Entertainment Group | Hong Kong | 1994 | 22 |
| Media Asia Films | — | October 12, 1993 | 23 |
| Media Development Authority | — | 2003 | 1 |
| Media Dreams | Chennai | 1997 | — |
| MEDIA sub-programme of Creative Europe | Brussels | 1990 | 2 |
| Media-Most | Moscow | 1997 | 2 |
| Mediapro | Mediapro Tower | April 21, 1994 | 19 |
| Mediaset | Milan | 1978 | — |
| Medienboard Berlin-Brandenburg | Potsdam | 2004 | 5 |
| Medieoperatørene | Oslo | 1995 | 6 |
| Medusa Film | Rome | 1964 | 172 |
| Mega Kreasi Films | — | — | 1 |
| Megaherz Film und Fernsehen | Unterföhring | 1983 | — |
| Mehboob Studio | Mumbai | 1954 | 8 |
| Mehregan Film | Tehran | 1960 | 20 |
| Melenny Productions | — | — | 4 |
| Melnitsa Animation Studio | Saint Petersburg | 1999 | 12 |
| Melodie Film | — | — | 3 |
| Memento Distribution | Paris | March 4, 2003 | 1 |
| Memfis Film | — | 1989 | 16 |
| Mer Film | — | 2011 | 3 |
| Mercenary Pictures | — | — | 4 |
| Merchant Ivory Productions | London | 1961 | 19 |
| Merit Motion Pictures | Winnipeg | 1988 | — |
| Merkur Film | Oslo Municipality | August 15, 1936 | 9 |
| Merkur Produksjon | Oslo | 1939 | 1 |
| Merlin Films | Dublin | 1989 | 3 |
| Merryland Studio | Nemom | 1951 | 5 |
| Merseyside Film Production Fund | — | — | 1 |
| Merv Griffin Entertainment | — | 1996 | 1 |
| Messenger2050 Technologies | — | 2008 | 4 |
| Messidor Films | Barcelona | — | 5 |
| Met Film Production | London | — | 1 |
| Meta Film Stockholm | Stockholm | 2013 | 2 |
| Metafilms | Montreal | 2003 | 15 |
| Meteor Film | — | 1939 | 2 |
| Metro International | Stockholm | 1995 | 1 |
| Metromedia | New York City | 1956 | 1 |
| Metronome Productions | Copenhagen | 1950 | — |
| Metropolitan Filmexport | Paris | 1978 | 4 |
| Mexican Association of Independent Filmmakers | — | 1993 | 1 |
| Mezhrabpom-Film | — | 1928 | 33 |
| Mezhrabpom-Rus | Moscow | 1923 | 14 |
| MFE - MediaForEurope | Cologno Monzese, Amsterdam | 1993 | 5 |
| MGA Entertainment | Los Angeles | 1979 | 2 |
| MGM Animation/Visual Arts | Culver City | 1962 | 2 |
| MGM Television | Beverly Hills | 1956 | 1 |
| Mhoch2 TV | address | 2010 | — |
| Michigan films | Brussels metropolitan area | February 2006 | — |
| Micro_scope | Montreal | 2002 | 10 |
| Midway Games | Chicago | 1988 | 1 |
| Mikado Film | — | 1984 | 10 |
| Miko Lee Productions | — | — | 1 |
| Mikrofilm | Oslo | October 16, 1996 | 1 |
| Miles Films | — | — | 8 |
| Milestone Production | — | — | 1 |
| Milfy | — | 2023 | 1 |
| Milk and Honey Pictures | Prague | February 29, 2000 | 1 |
| Milk Pictures | — | — | 1 |
| Millar/Gough Ink | Irvine | 1995 | 1 |
| Millennium Film Oy | — | — | 1 |
| Millennium Films | — | — | 36 |
| Millennium Media | Los Angeles | 1992 | 75 |
| Miller-Boyett Productions | — | 2015 | 3 |
| Mills James | — | 1984 | 1 |
| Minerva Film | — | 1912 | 14 |
| Minerva Film | Copenhagen | — | 1 |
| Minerva Movietone | — | 1936 | 2 |
| Mingxing Film Company | Shanghai | February 1922 | 4 |
| Ministry of Culture and Information of Kazakhstan | Astana | October 29, 2004 | 1 |
| Ministry of Culture of France | Palais-Royal | 1959 | 1 |
| Ministry of Culture of Russia | Moscow | May 12, 2008 | 4 |
| Minnow Mountain | Austin | — | 1 |
| Mint AB | Malmö | 1998 | 2 |
| Mint Motion Pictures | Istanbul | 1996 | 2 |
| Minxin Film Company | Shanghai | 1922 | 1 |
| Mirabai Films | New York City | 1989 | 4 |
| Miracle Pictures | Santa Monica | — | 1 |
| Mirage Studios | Northampton | 1983 | 5 |
| Miramax | Toronto, United States, Los Angeles | 1979 | 163 |
| Mirror Films | — | September 23, 1915 | — |
| Mischief Films | Vienna | — | 4 |
| Missing Pictures | — | — | 2 |
| Mission Pictures International | — | 2008 | 2 |
| Mitosfilm | Berlin | 2004 | 2 |
| Mitteldeutscher Rundfunk | Leipzig | 1992 | 9 |
| Mitteldeutsches Filmkontor | Leipzig | — | 1 |
| Miyu Productions | — | May 2009 | 1 |
| Mizan Productions | — | — | 2 |
| MMC Studios Cologne | Cologne | — | 2 |
| MMG | Asse | — | 1 |
| Mobra Films | Bucharest | — | 1 |
| MOD Producciones | Madrid | 2007 | 22 |
| Modern Studios | Stockholm | — | 1 |
| Mohawk Productions | — | 1991 | — |
| Moho Film | Seoul | — | 8 |
| MOIN Filmförderung Hamburg Schleswig-Holstein | Hamburg | — | — |
| Moiré Films | — | — | 1 |
| Mojang Studios | Stockholm | 2009 | 1 |
| Mojave Desert | — | — | 1 |
| Moladat Studio | — | 1927 | 1 |
| Momentum Pictures | — | 1996 | 1 |
| Monarch Media (United States) | Santa Cruz | — | 1 |
| Monday Media | Copenhagen | 2008 | — |
| Monkey Pack Films | Boulogne-Billancourt | — | 1 |
| Monkeypaw Productions | Los Angeles | January 31, 2012 | 7 |
| Monogram Pictures | New York City, Los Angeles | 1931 | 155 |
| Monolith Films | Warsaw | January 11, 2002 | 1 |
| Monrovia Feature Film Company | Monrovia | — | 2 |
| Monsta Studios | Malaysia | September 15, 2009 | 1 |
| Monster Media | Oslo | 2001 | 1 |
| Monster Union | — | 2016 | 1 |
| Monte Royal Pictures | Belgrade | 1994 | — |
| Monumental Pictures | Moscow | 2008 | 8 |
| Mook Animation | Suginami | 1986 | 1 |
| Moonlight film company | Seoul | April 13, 2012 | — |
| More4 | London | 2005 | 2 |
| Moriarti Productions | Pasaia | 2001 | 6 |
| Moser + Rosié Film | Berlin | 1968 | — |
| Moskino | Moscow | — | 1 |
| Mostra Cine | — | 2018 | 2 |
| Motel Films | — | 1995 | 7 |
| Moteur s'il vous plaît | Paris | 2005 | 2 |
| Motion Picture & General Investment | British Hong Kong | 1955 | 3 |
| Motion Picture Corporation of America | Century City | 1986 | 16 |
| Motion Pictures, S.A. | London | 1968 | 1 |
| Motlys | Oslo Municipality | — | 18 |
| Motovun Film Festival | — | 1999 | 1 |
| Motto Pictures | Brooklyn | 2009 | 2 |
| Mount Street Film | — | — | 1 |
| Mountain River Films | Kathmandu | 2010 | 1 |
| Move Movie | Paris | July 15, 2001 | 2 |
| Movie Central | Toronto | February 1983 | 1 |
| Movie Masters | — | — | 1 |
| Movie Walker | Chiyoda | July 7, 2011 | 2 |
| Moviechi | Mashhad | May 2021 | 5 |
| MovieMakers | — | — | 7 |
| Movimento Production | Paris | — | 2 |
| Moving Picture Company | London | 1970 | 8 |
| Moving Picture Institute | New York City | — | 7 |
| Moving Puppet | — | October 9, 2006 | — |
| Moviola Film och Television AB | — | — | 1 |
| MPH Entertainment, Inc. | United States | 1996 | — |
| MR Film | Vienna | 1967 | 5 |
| MRB Productions | — | — | 2 |
| MRP Matila Röhr Productions | Cable Factory, Karis | January 30, 1991 | 19 |
| MS NOW | 30 Rockefeller Plaza | July 15, 1996 | 1 |
| MTL Maxfilm | Warsaw | 1992 | 1 |
| MTM Enterprises | — | 1969 | 1 |
| MTV Channel | Colombo | 1992 | 1 |
| MTV Entertainment Studios | Hollywood | 1991 | 1 |
| Mukta Arts | Mumbai | 1978 | 4 |
| Mulakuppadam Films | — | 2007 | — |
| Mult.ru | Saint Petersburg | — | — |
| Multimedia Film- und Fernsehproduktion | Hamburg | — | 2 |
| Multivision Plus | Jakarta | April 18, 1990 | 22 |
| Mundial Film | Barcelona | 1925 | 1 |
| MundoFox (Latin America) | Latin America | — | — |
| Murmur | — | — | 1 |
| Muse Entertainment Enterprises | Montreal | 1998 | 4 |
| Mushi Production | Japan | 1961 | 7 |
| Music Box Films | Chicago | 2007 | 2 |
| Mutant Enemy Productions | Los Angeles | 1996 | 2 |
| Mutante Filmes | — | — | 1 |
| Muteki | — | 2008 | — |
| My Deer Films | — | — | 1 |
| MY TV Productions | — | 2005 | — |
| Mystic Story | Seoul | 2001 | 2 |
| Mythberg Films | Budapest | — | 1 |
| Mythos Production | — | — | 2 |
| Mythri Movie Makers | Hyderabad | — | 11 |
| Myung Films | Jongno District | 1995 | 33 |
| Méditerranée Cinéma Productions | — | — | 1 |
| Métropole du Grand Nancy | Nancy | 1996 | 1 |