| M&M Productions | Kopenhagen | 1995 | 5 |
| M-production | 1st Tverskaya-Yamskaya Street | 1992 | 1 |
| M.H. Films Productions | — | — | 1 |
| M6 (saluran televisi) | Neuilly-sur-Seine | Maret 1987 | 9 |
| Mac Guff | Paris | 1986 | — |
| Macalla Teoranta | Dublin | 1997 | 1 |
| MacGillivray Freeman Films | Pantai Laguna | 1963 | 2 |
| MACT Productions | Paris | — | 3 |
| Maddock Films | Mumbai | 2010 | 13 |
| Madefor Film | Berlin | 2020 | — |
| Madhouse | Nakano | 17 Oktober 1972 | 26 |
| MadLove Film Factory | — | — | 1 |
| Madman Entertainment | Melbourne | 1996 | 5 |
| Madras Talkies | Chennai | 1995 | 19 |
| Maeda Corporation | Tokyo | 1919 | 1 |
| Maestranza Films | Sevilla | — | 4 |
| MAG Yapım | Provinsi Uşak | 2023 | 1 |
| Magellan Films | Kota Brussel | — | 1 |
| Magic | — | — | 1 |
| Magic Stone Productions | — | — | 2 |
| Magic TV | Paris | 29 Maret 1993 | — |
| Magnolia Pictures | Dallas | 2001 | 6 |
| Magnéto Presse | Boulogne-Billancourt | 24 Juli 2008 | 1 |
| Mago film | — | — | 2 |
| Mahakarya Pictures | Tebet Timur | 2009 | 1 |
| Mainstream | — | — | 2 |
| Mainz University of Applied Sciences | — | 1971 | 1 |
| Maipo Film | Oslo | 5 September 2001 | 20 |
| Majestic Films International | Berlin | 2006 | 2 |
| Majestic Motion Picture Company | — | — | 1 |
| Makido film | Wina, Weimar, Meidling | 2011 | — |
| Making Movies | Torkkelinmäki | 1996 | 12 |
| Makino Film Productions | — | 1923 | 1 |
| Makino Production | — | Juni 1925 | — |
| Malpaso Productions | Burbank | 1967 | 45 |
| Mamahyhotala | Kyiv | 2012 | — |
| Mammoth Screen | — | 24 Oktober 2006 | — |
| Man of Action Studios | Glendale | 2005 | 2 |
| Mandarin et Compagnie - Mandarin Télévision | Paris | 1995 | 28 |
| Mandarin Films Distribution Co. Ltd. | Causeway Bay | 1991 | 4 |
| Mandate Pictures | Santa Monica | 2005 | 22 |
| Mandeville Films | Burbank | 1994 | 21 |
| Mandragora Movies | — | — | 1 |
| Manex Visual Effects | Alameda | — | 1 |
| Manfred Durniok Produktion | Berlin | — | 1 |
| Manga Entertainment | London | 1987 | 1 |
| Manglobe | Suginami | 2002 | 1 |
| Manifold Productions | — | 1977 | 1 |
| Manoli Films | Filipina | 2000 | 1 |
| Manslaughter | — | — | 1 |
| Mantarraya Productions | Kota Meksiko | 1998 | — |
| Manuel Ferrara Productions | — | — | 6 |
| ManyVids | — | 2014 | 1 |
| Man’s Films | — | — | 5 |
| Maoyan entertainment | Beijing | Juli 2015 | 2 |
| Maran Film GmbH | Stuttgart, Baden-Baden | 1963 | — |
| Marc Platt Productions | Universal City | 2001 | 19 |
| Mark Goodson Productions | Hollywood, Kota New York | Mei 1946 | 2 |
| Mark Johnson | — | — | 2 |
| Mark VII Limited | Los Angeles | 1951 | 3 |
| Marlene Film Production | Praha | 16 Juni 2014 | 3 |
| Mars Entertainment | Bouvignes-sur-Meuse | — | 1 |
| Mars Entertainment Group | — | 2001 | 2 |
| Mars Media Entertainment | Moskow | November 2011 | 4 |
| Marza Animation Planet | Tokyo | 2010 | 5 |
| Mascot Pictures | Los Angeles | 1927 | 7 |
| Massa d’Or Produccions | Barcelona | 1992 | 1 |
| Master-film | Moskow | 1996 | — |
| Matador Pictures | London | — | 1 |
| Matchbox Pictures | Sydney | 2008 | — |
| Matchstick Productions | Crested Butte | — | — |
| Mate Production | Barcelona | — | 1 |
| Mattel | El Segundo | 1945 | 7 |
| Mattel Films | El Segundo | September 2018 | 3 |
| Mattel Television | Amerika Serikat | 30 Maret 2016 | 1 |
| Matthias-Film | Berlin | — | — |
| Maurice Tourneur Productions | — | 1918 | 1 |
| Maverick | Burbank | 1992 | 1 |
| Maverick Films | Burbank | 1992 | 11 |
| Max Pictures | Duren Tiga | 2011 | 11 |
| Maxam | — | 24 Juni 1991 | 1 |
| Maximal Productions | — | — | — |
| Maximum Effort | Kota New York | 2018 | 4 |
| MAXstream | — | Juni 2018 | 1 |
| Maze Pictures | Munich | 2015 | 3 |
| MBC Group (Arab Saudi) | Riyadh | 18 September 1991 | 1 |
| MCA Television | — | 1951 | 1 |
| McGraw Hill Education | Kota New York | 1888 | 1 |
| MD Entertainment | — | 6 Maret 2003 | 8 |
| Mechanix Film | Hvaler Municipality | 15 Agustus 2009 | 1 |
| Media Asia Entertainment Group | Hong Kong | 1994 | 22 |
| Media Asia Films | — | 12 Oktober 1993 | 23 |
| Media Dreams | Chennai | 1997 | — |
| Media Mix Japan | Tokyo | 2 April 1993 | 1 |
| MEDIA sub-programme of Creative Europe | Kota Brussel | 1990 | 2 |
| MediaNews Group | — | 1983 | 1 |
| Mediapro | Mediapro Tower | 21 April 1994 | 19 |
| Mediaset Premium | — | 20 Januari 2005 | 1 |
| Mediawan | Paris | 15 Desember 2015 | 3 |
| Medienprojekt Wuppertal | — | — | 1 |
| Medieoperatørene | Oslo | 1995 | 6 |
| Medusa Film | Roma | 1964 | 172 |
| Medyapım | Istanbul | — | 3 |
| Mefistofilm | — | — | 10 |
| Mega Channel | — | 1989 | 2 |
| Mega-Vision Project Workshop | — | 2010 | 2 |
| Megogo | Kyiv | 22 November 2011 | 2 |
| Mehboob Studio | Mumbai | 1954 | 8 |
| Mei Ah Entertainment | Tseung Kwan O INNOPARK | 1984 | 5 |
| Melenny Productions | — | — | 4 |
| Melusine Productions | — | 1998 | 3 |
| Memfis Film Rights5 | Stockholm | 4 Maret 2004 | 1 |
| Memphis Film & Television | — | — | 2 |
| Menuet | — | — | 15 |
| Merryland Studio | Nemom | 1951 | 5 |
| Merseyside Film Production Fund | — | — | 1 |
| Merv Griffin Entertainment | — | 1996 | 1 |
| Messenger2050 Technologies | — | 2008 | 4 |
| Messercola Drama & Soap | — | — | 3 |
| Messter Film | Berlin | 1897 | 19 |
| Met Film Production | London | — | 1 |
| Meta Film | Kopenhagen | 27 Desember 2012 | 1 |
| Meta Film Stockholm | Stockholm | 2013 | 2 |
| Metafilms | Montreal | 2003 | 15 |
| Metahaven | — | — | 1 |
| Meteor Film | — | 1939 | 2 |
| Meteoriit | Tallinn | 14 Januari 2013 | 4 |
| Method Animation | Los Angeles | 2008 | 8 |
| Metro International | Stockholm | 1995 | 1 |
| Metro Pictures | Los Angeles | 1915 | 41 |
| Metro-Goldwyn-Mayer | Los Angeles | 17 April 1924 | 1.347 |
| Metromuster | Barcelona | 2010 | 1 |
| Metronom Studio | Moskow | — | 1 |
| Metropolitan Filmexport | Paris | 1978 | 4 |
| Mezhrabpom-Film | — | 1928 | 33 |
| Mezhrabpom-Rus | Moskow | 1923 | 14 |
| MFE - MediaForEurope | Cologno Monzese, Amsterdam | 1993 | 5 |
| MGM Animation/Visual Arts | Culver City | 1962 | 2 |
| MGM Television | Beverly Hills | 1956 | 1 |
| MHD Concern Film | Kalverstraat | 1934 | 1 |
| MIA FILM | Praha | 25 Februari 2010 | 1 |
| Micha's Films | — | 2009 | 1 |
| Michigan films | Kawasan Metropolitan Brussels | Februari 2006 | — |
| Micro scope | Montreal | 2002 | 10 |
| Mifal HaPayis | Tel Aviv | 1951 | 1 |
| Mighty Express | Toronto | 1994 | 2 |
| Mikado Film | — | 1984 | 10 |
| Mike Adriano Media | — | — | 1 |
| Mikros Image | — | 1985 | 2 |
| Miles Films | — | — | 8 |
| Milestone Production | — | — | 1 |
| Milk and Honey Pictures | Praha | 29 Februari 2000 | 1 |
| Milk Pictures | — | — | 1 |
| Milkyway Image | Hong Kong | 1996 | 27 |
| Millar/Gough Ink | Irvine | 1995 | 1 |
| Miller-Boyett Productions | — | 2015 | 3 |
| Millstreet Films | — | — | 3 |
| Minds Eye Entertainment | Regina | 1986 | 5 |
| Minerva Film | — | 1912 | 14 |
| Minerva Film | Kopenhagen | — | 1 |
| Minerva Pictures | Roma | 1953 | 4 |
| Minerva-Tonfilm | Berlin | — | — |
| Mingxing Film Company | Shanghai | Februari 1922 | 4 |
| Ministry of Culture | Roman College | 1974 | 10 |
| Ministry of Culture and Sports | Tel Aviv | 2009 | 1 |
| Ministry of Culture of France | Palais-Royal | 1959 | 1 |
| Ministry of Culture of Russia | Moskow | 12 Mei 2008 | 4 |
| Minnow Mountain | Austin | — | 1 |
| Minoria Absoluta | — | 2006 | 6 |
| Minxin Film Company | Shanghai | 1922 | 1 |
| Mirabai Films | Kota New York | 1989 | 4 |
| Miracle Pictures | Santa Monica | — | 1 |
| Mirage Enterprises | — | — | 6 |
| Miramax | Toronto, Amerika Serikat, Los Angeles | 1979 | 163 |
| Mirror Films | — | 23 September 1915 | — |
| Mischief Films | Wina | — | 4 |
| Miss Wasabi Films | Barcelona | — | 2 |
| Missaghieh Studio | Teheran | 7 Desember 1959 | 40 |
| Missing Pictures | — | — | 2 |
| Mission Pictures International | — | 2008 | 2 |
| Mistrus Media | Riga | 4 Januari 2000 | 8 |
| Miyagi Television Broadcasting | Prefektur Miyagi | 17 Januari 1970 | 1 |
| Miyu Productions | — | Mei 2009 | 1 |
| Mjölk Production | — | — | 1 |
| MMC Movies | Köln | — | 2 |
| MMC Studios Cologne | Köln | — | 2 |
| MMG | Asse | — | 1 |
| Mobra Films | Bukares | — | 1 |
| Moco Films | London | — | 1 |
| MOD Producciones | Madrid | 2007 | 22 |
| Modern Theatres | Salem | 1935 | 15 |
| Mofac Studio | — | — | 1 |
| Mohawk Productions | — | 1991 | — |
| Moho Film | Seoul | — | 8 |
| Mojang Studios | Stockholm | 2009 | 1 |
| MOKÉP | Budapest | Juli 1986 | 1 |
| Moladat Studio | — | 1927 | 1 |
| Monarch Media (United States) | Santa Cruz | — | 1 |
| Monday Media | Kopenhagen | 2008 | — |
| Mongolkino | Songino Khairkhan | 1935 | 58 |
| Monkey Pack Films | Boulogne-Billancourt | — | 1 |
| Monkeypaw Productions | Los Angeles | 31 Januari 2012 | 7 |
| MONOfilm | — | 1993 | 1 |
| Monogram Pictures | Kota New York, Los Angeles | 1931 | 155 |
| Monsoon Films | Dhaka | 2010 | 1 |
| Monster Media | Oslo | 2001 | 1 |
| Monte Royal Pictures | Beograd | 1994 | — |
| Mook Animation | Suginami | 1986 | 1 |
| Moonbow Pictures | — | 19 November 2018 | 1 |
| MoonScoop Group | Paris | 1990 | 2 |
| More4 | London | 2005 | 2 |
| Morena Films | Madrid | 1999 | 22 |
| Morgana film | Roma | 1914 | 3 |
| Moriarti Productions | Pasaia | 2001 | 6 |
| Moser Baer | New Delhi | 1983 | 1 |
| Mosfilm | Moskow, Mosfilmovskaya Street | 30 Januari 1920 | 997 |
| Moskino | Moskow | — | 1 |
| Moteur s'il vous plaît | Paris | 2005 | 2 |
| Mother Production | Paris | 31 Januari 2011 | 2 |
| Motion Blur | Oslo | 2012 | 2 |
| Motion Picture & General Investment | Hong Kong Britania Raya | 1955 | 3 |
| Motlys | Oslo | — | 18 |
| Motor ApS | Munisipalitas Copenhagen | 10 Januari 2018 | 2 |
| Mount Zion Film Productions | — | — | 2 |
| Movie Central | Toronto | Februari 1983 | 1 |
| MovieMakers | — | — | 7 |
| Movieweb | — | — | 1 |
| Movimento Production | Paris | — | 2 |
| Moving Picture Institute | Kota New York | — | 7 |
| Moving Puppet | — | 9 Oktober 2006 | — |
| Moviola Film och Television AB | — | — | 1 |
| Movistar Plus+ | Tres Cantos | 8 Juli 2015 | 31 |
| MPI Media Group | Orland Park | 1976 | 4 |
| MPL Communications | Kota New York, London | 1970 | 2 |
| Mpower Pictures | Los Angeles | 2007 | 4 |
| MRB Productions | — | — | 2 |
| MRC | Beverly Hills | 2006 | 30 |
| MRP Matila Röhr Productions | Cable Factory, Karis | 30 Januari 1991 | 19 |
| MS NOW | GE Building | 15 Juli 1996 | 1 |
| MTL Maxfilm | Warsawa | 1992 | 1 |
| MTM Medien & Television München | Munich | — | 2 |
| MTV | Kota New York | Agustus 1981 | 3 |
| MTV Films | Los Angeles | 1996 | 42 |
| MTV Oy | Helsinki | 29 April 1957 | 5 |
| Mult.ru | Sankt-Peterburg | — | — |
| Multi Film | — | 1999 | — |
| Multifilmes | Mairiporã | 1952 | 1 |
| Multivision Plus | Jakarta | 18 April 1990 | 22 |
| Murmur | — | — | 1 |
| Muse Entertainment Enterprises | Montreal | 1998 | 4 |
| Museu de la Música de Barcelona | L'Auditori | 29 Mei 1946 | 1 |
| Museum Louvre | — | 10 Agustus 1793 | 3 |
| Mushi Production | Jepang | 1961 | 7 |
| Mushroom Pictures | — | — | 3 |
| Mutant Enemy Productions | Los Angeles | 1996 | 2 |
| Mutant Koala Pictures | — | — | 1 |
| Mutante Filmes | — | — | 1 |
| Muteki | — | 2008 | — |
| MWM Studios | Culver City | 2001 | 13 |
| MY TV Productions | — | 2005 | — |
| My Way Film Company Limited | Kowloon | 1981 | 5 |
| Myriapod Productions | — | — | 1 |
| Myth Film | — | 1997 | — |
| Mythos Production | — | — | 2 |
| Méditerranée Cinéma Productions | — | — | 1 |
| Métropole du Grand Nancy | Nancy | 1996 | 1 |