 | Maag (Tartu), Estonia |
| Maardu (Maardu), Estonia |
 | Mablethorpe United, England |
 | Macará (Ambato), Ecuador |
 | Macarthur FC (Sydney), Australia |
 | Maccabi (Haifa), Israel |
| Maccabi (Netanya), Israel |
| Maccabi (Petah-Tikva), Israel |
| Maccabi (Tel Aviv), Israel |
| Maccabi Jaffa (Jaffa), Israel |
| Maccabi London Lions (London), England |
| Macclesfield Town (Macclesfield), England |
 | Machhindra (Kathmandu), Nepal |
| Machynlleth, England |
 | Madang (Madang), Papua New Guinea |
 | Madureira (Rio de Janeiro), Brazil |
| Maesteg Park Athletic, England |
 | Maestro United Zambia (Mazabuka), Zambia |
 | Mafunzo, Zanzibar |
 | Magallanes (Santiago), Chile |
 | Magaroeli (Chiatura), USSR |
 | Magdeburg (Magdeburg), GDR |
 | Magenta (Nouméa), New Caledonia |
 | Magwe (Magwe), Myanmar |
 | Magyar AC (Budapest), Hungary |
| Magyar Munkás UE (Budapest), Hungary |
 | Mahindra United (Mumbai), India |
| Maidenhead Norfolkians, England |
| Maidenhead United (Maidenhead), England |
| Maidstone, England |
| Maidstone Athletic, England |
| Maidstone Church Institute, England |
| Maidstone United (Maidstone), England |
| Maidstone United (Maidstone), England |
| Maine Road (Manchester), England |
 | Mainz 05 (Mainz), FRG |
 | Mainz 05 (Mainz), Germany |
 | Majantja (Mohale's Hoek), Lesotho |
 | Maji Maji (Songea), Tanzania |
 | Makedonija (Bitola), Bulgaria |
| Makedonija (Skopje), Bulgaria |
 | Makedonija (Skopje), North Macedonia |
| Makharadze team (Makharadze), USSR |
 | Makhtaaral (Zhetysai), Kazakhstan |
 | Makkabi (Moscow), Russia |
 | Makuru (Honiara), Solomon Islands |
 | Malacateco (Malacatán), Guatemala |
 | Malacca (Malacca), Malaysia |
 | Maladzyechna-2018 (Maladzyechna), Belarus |
 | Málaga (Málaga), Spain |
| Malaita Eagles, Solomon Islands |
 | Malampa Revivors (Luganville), Vanuatu |
 | Malanti Chiefs (Piggs Peak), Eswatini |
 | Malatia (Yerevan), Armenia |
| Malatiya (Yerevan), USSR |
 | Malatyaspor (Malatya), Turkey |
 | Malavan (Bandar-e Anzali), Iran |
| Malden Town, England |
| Malden Vale, England |
| Maldon & Heybridge, England |
| Maldon & Tiptree (Maldon), England |
| Malindi (Zanzibar), Tanzania |
 | Malkiya (Malkiya), Bahrain |
| Mallorca (Palma de Mallorca), Spain |
| Malmesbury Victoria (Malmesbury), England |
 | Malmö (Malmö), Sweden |
 | Malta Carib Alcons, Trinidad and Tobago |
| Maltby Main (Maltby), England |
| Maltby Main Colliery, England |
| Malvern Town (Malvern), England |
| Malvern United (Port of Spain), Trinidad and Tobago |
 | Mamahira (Kati), Mali |
 | Mambas Noirs FC (Cotonou), Benin |
 | Mamelodi Sundowns (Atteridgeville), South Africa |
 | Man FC (Man), Côte d'Ivoire |
 | Mana (Mana), French Guiana |
 | Managua (Managua), Nicaragua |
| Manama (Manama), Bahrain |
| Manang Marsyangdi (Katmandu), Nepal |
| Manaus (Manaus), Brazil |
| Manchester, England |
| Manchester Central (Manchester), England |
| Manchester City (Manchester), England |
| Manchester North End, England |
| Manchester United (Manchester), England |
| Mangotsfield United (Mangotsfield), England |
 | Maniema Fantastique (Bujumbura), Burundi |
 | Maniema Union (Kindu), DR Congo |
 | Manila Lions (Manila), Philippines |
 | Mankona (Guéckédou), Guinea |
| Mannheim (Mannheim), FRG |
| Manning Rangers (Durban), South Africa |
| Mansfield, England |
| Mansfield Colliery, England |
| Mansfield Foresters, England |
| Mansfield Mechanics, England |
| Mansfield Town, England |
| Mansfield Town (Mansfield), England |
| Mansfield Woodhouse Excelsior, England |
| Mansfield Woodhouse Rangers, England |
| Manton Colliery, England |
 | Mantova (Mantova), Italy |
 | Manu-Ura (Papeete), French Polynesia |
 | Manumea, American Samoa |
| Manzini Sundowns (Manzini), Eswatini |
| Manzini Wanderers (Manzini), Eswatini |
| Maple Club (Port of Spain), Trinidad and Tobago |
| Mapperley, England |
| Mapplewell & Staincross Athletic, England |
 | Maranatha (Kpalimé), Togo |
| Maranhão (São Luís), Brazil |
 | Marathón (San Pedro Sula), Honduras |
| March Great Eastern United, England |
| March Town United (March), England |
| Marcílio Dias (Itajaí), Brazil |
| Marconi Stallions (Sydney), Australia |
| Mardy, England |
| Marek (Dupnica), Bulgaria |
| Marfleet, England |
| Margate (Margate), England |
| Margate Holy Trinity, England |
 | Margveti (Zestaponi), Georgia |
 | Mariano Moreno (Junin), Argentina |
 | Maribor (Maribor), Slovenia |
 | Maribor (Maribor), Yugoslavia |
| Maricá (Maricá), Brazil |
 | Mariehamn (Mariehamn), Finland |
| Marília (Marília), Brazil |
| Marine (Crosby), England |
 | Marine Club (Mogadishu), Somalia |
| Maringá (Maringá), Brazil |
| Marist (Honiara), Solomon Islands |
 | Marítimo (Caracas), Venezuela |
 | Marítimo (Funchal), Portugal |
| Maritsa (Plovdiv), Bulgaria |
 | Markaz Shabab Al-Amari (Al-Ram), Palestine |
| Markaz Shabab Balata (Balata), Palestine |
 | Markersdorf (Markersdorf-Haindorf), Austria |
| Market Drayton Town (Market Drayton), England |
| Markham Main Colliery, England |
| Marktl (Marktl), FRG |
| Marl-Hüls (Marl), FRG |
| Marlborough Old Boys, England |
| Marlow (Marlow), England |
| Marlow United (Marlow), England |
| Marquense (San Marcos), Guatemala |
 | Marsa (Marsa), Malta |
| Marsaxlokk (Marsaxlokk), Malta |
| Marsden, England |
| Marsden Moor, England |
 | Marseille (Marseille), France |
| Marske United (Marske-by-the-Sea), England |
 | Marsonia (Slavonski Brod), Croatia |
| Marston Shelton Rovers, England |
| Martigues (Martigues), France |
| Marumo Gallants (Polokwane), South Africa |
| Maryport, England |
 | MAS Fez (Fez), Morocco |
 | Masallı (Masallı), Azerbaijan |
| Maseru Brothers (Maseru), Lesotho |
| Maseru Rovers (Maseru), Lesotho |
| Maseru United (Maseru), Lesotho |
| Mashinostroitel (Balashiha), USSR |
| Mashinostroitel (Kiev), USSR |
| Mashinostroitel (Podolsk), USSR |
| Mashinostroitel (Pskov), USSR |
| Mashtekhsoyuz (Moscow), USSR |
| Mashuk (Pyatigorsk), USSR |
| Mashuk-KMV (Pyatigorsk), Russia |
 | Mashynobudivnyk (Druzhkivka), Ukraine |
| Mashzavod (Stupino), USSR |
 | Mashʼal (Mubarek), Uzbekistan |
| Masséda (Masséda), Togo |
 | Master 7 (Vientiane), Laos |
 | Master's FA (Toronto), Canada |
 | Masters Security (Lilongwe), Malawi |
 | Mastis (Telšiai), Lithuania |
 | Mastrans Bandung Raya, Indonesia |
 | Masvingo United (Masvingo), Zimbabwe |
 | Matchedje (Maputo), Mozambique |
 | Mathare United (Nairobi), Kenya |
| Matlama Football Club (Maseru), Lesotho |
| Matlock Town (Matlock), England |
| Matonense (Matão), Brazil |
| Mattersburg (Mattersburg), Austria |
 | Mauritel (Nouakchott), Mauritania |
| Mauritius Sports Association, England |
| Maxaquene (Maputo), Mozambique |
| Maxline (Vitebsk), Belarus |
| Mayak (Chardzhou), USSR |
| Mayak (Kharkov), USSR |
| Mayak (Ochakov), USSR |
| Mayaro United (Mayaro), Trinidad and Tobago |
| Mayen (Mayen), FRG |
 | Mazatlán (Mazatlán), Mexico |
| Mažeikiai (Mažeikiai), Lithuania |
 | Maziya (Male), Maldives |
| Mbabane Highlanders (Mbabane), Eswatini |
| Mbabane Swallows (Mbabane), Eswatini |
 | Mbale Heroes (Mbale), Uganda |
 | Mbilinga FC (Port-Gentil), Gabon |
 | Mbongo Sport (Mbuji-Mayi), Zaire |
 | Mbour Petite-Côte (M'Bour), Senegal |
 | MC Alger (Alger), Algeria |
| MC Oran (Oran), Algeria |
| MC Oujda (Oujda), Morocco |
| McLaren Sports, England |
| MDC United (Lilongwe), Malawi |
 | Mdlaw Megbi (Asmara), Eritrea |
| Measham Imperial, England |
| Measham Town, England |
 | Meat Commission (Lobatse), Botswana |
 | Mechal (Addis Ababa), Ethiopia |
 | Mechelen (Mechelen), Belgium |
 | Medeama (Tarkwa), Ghana |
| Medik (Krasnodar), USSR |
| Medik (Morshin), Ukraine |
| Medr Babur (Dire Dawa), Ethiopia |
| Megasport (Almaty), Kazakhstan |
| Meiendorfer SV (Hamburg), FRG |
| Meir KA (Stoke-on-Trent), England |
 | Meizhou Hakka (Meizhou), China |
| Mekelle 70 Enderta (Mekelle), Ethiopia |
| Melaka Telekom (Kuala Lumpur), Malaysia |
| Melanzhist (Egoryevsk), USSR |
| Melbourne City (Melbourne), Australia |
| Melbourne Knights (Melbourne), Australia |
| Melbourne Victory (Melbourne), Australia |
 | Melgar (Arequipa), Peru |
| Meliorator (Chimkent), USSR |
| Meliorator (Kzyl-Orda), USSR |
| Meliyaratar (Zhytkavichy), Belarus |
| Melksham, England |
| Melksham & Avon United, England |
| Melksham Town (Melksham), England |
| Mellors, England |
| Melsunger FV 08 (Melsungen), FRG |
| Meltham, England |
| Meltham Mills, England |
| Melton, England |
| Melton Town (Melton Mowbray), England |
 | Memphis Rogues (Memphis), USA |
| MEPhI (Moscow), Russia |
| Meppen (Meppen), FRG |
| Merani (Martvili), Georgia |
| Merani (Tbilisi), Georgia |
 | Merbat (Mirbat), Oman |
| Mérida (Mérida), Spain |
| Mersin (Mersin), Turkey |
| Merstham (Merstham), England |
 | Merthyr Town (Merthyr Tydfil), Wales |
| Merthyr Tydfil (Merthyr Tydfil), Wales |
| Mertskhali (Makharadze), USSR |
| Mertskhali (Ozurgeti), Georgia |
 | Merw (Mary), Turkmenistan |
| Merw (Mary), USSR |
| Meshakhte (Tkibuli), USSR |
| Meshakre (Agara), Georgia |
| Meskheti (Akhaltsikhe), Georgia |
| Messina (Messina), Italy |
| Metal & Produce Recovery Depot, England |
 | Metalac (Gornji Milanovac), Serbia |
| Metalist (Irshava), Ukraine |
| Metalist (Kharkiv), Ukraine |
| Metalist 1925 (Kharkiv), Ukraine |
| Metallist (Kharkiv), Ukraine |
| Metallist (Kharkov), USSR |
| Metallist (Pavlovo), USSR |
| Metallist (Petropavlovsk), USSR |
| Metallurg (Aldan), Russia |
| Metallurg (Almalyk), USSR |
| Metallurg (Asha), Russia |
| Metallurg (Balkhash), USSR |
| Metallurg (Bekobod), Uzbekistan |
| Metallurg (Boksitogorsk), USSR |
| Metallurg (Dneprodzerzhinsk), USSR |
| Metallurg (Elektrostal), USSR |
 | Metallurg (Kadamjay), Kyrgyzstan |
| Metallurg (Krasny Sulin), USSR |
| Metallurg (Kuybyshev), USSR |
| Metallurg (Lipetsk), Russia |
| Metallurg (Lipetsk), USSR |
| Metallurg (Magnitogorsk), USSR |
| Metallurg (Novokuznetsk), USSR |
| Metallurg (Novotroitsk), USSR |
| Metallurg (Pikalevo), Russia |
| Metallurg (Pikalevo), USSR |
| Metallurg (Rustavi), USSR |
| Metallurg (Stalingrad), USSR |
| Metallurg (Stary Oskol), USSR |
| Metallurg (Temirtau), USSR |
| Metallurg (Vidnoye), Russia |
| Metallurg (Volkhov), USSR |
| Metallurg (Vyksa), Russia |
| Metallurg (Yermak), USSR |
| Metallurg (Zaporozhye), USSR |
| Metallurg (Zlatoust), USSR |
| Metallurg Vostoka (Sverdlovsk), USSR |
| Metallurg-Oskol (Stary Oskol), Russia |
| Metalurg (Pernik), Bulgaria |
| Metalurg (Skopje), North Macedonia |
| Metalurgi (Rustavi), Georgia |
| Metalurgi (Zestaponi), Georgia |
 | Metalurgs (Liepāja), Latvia |
| Metalurh (Kryvyi Rih), Ukraine |
| Metalurh (Novomoskovsk), Ukraine |
| Metalurh (Zaporizhzhya), Ukraine |
| Metalurh D (Donetsk), Ukraine |
| Metalurh-2 (Donetsk), Ukraine |
| Metalurh-2 (Zaporizhzhya), Ukraine |
| Meteor (Berlin), FRG |
| Meteor (Moscow), USSR |
| Meteor (Zhukovsky), USSR |
| Methley Perseverance, England |
| Metiznik (Magnitogorsk), Russia |
| Metrogas, England |
| Metropol (Criciúma), Brazil |
 | Metropolitan (San Juan), Puerto Rico |
| Metropolitan Police (Molesey), England |
| Metropolitan Railway, England |
| Metropolitanos (Caracas), Venezuela |
| Metrostroy (Minsk), Belarus |
| Metrostroy (Moscow), USSR |
| METTA/LU (Rīga), Latvia |
| Mettlach (Mettlach), FRG |
| Metz (Metz), France |
| Mexborough Locomotive Works, England |
| Mexborough St John's, England |
| Mexborough West End, England |
| Mezőkövesd-Zsóry (Mezőkövesd), Hungary |
| Međimurje (Čakovec), Croatia |
| MFK Mykolaiv (Mykolaiv), Ukraine |
| MFK Mykolaiv-2 (Mykolaiv), Ukraine |
| MFK Zhytomyr (Zhytomyr), Ukraine |
 | MFM (Lagos), Nigeria |
| Mhlambanyatsi (Mhlambanyatsi), Eswatini |
| Mhlume Peacemakers (Mhlume), Eswatini |
| Mhlume United (Mhlume), Eswatini |
 | MHM-93 (Chişinău), Moldova |
| MHSK (Tashkent), Uzbekistan |
| MHUP (Mogilev), Belarus |
| Miami Fusion (Fort Lauderdale), USA |
| Miami Toros (Miami), USA |
| Mickleover (Mickleover), England |
| Mickleover RBL, England |
| Mickley, England |
| Mid Kent, England |
| Mid Rhondda, England |
| Middlesbrough (Middlesbrough), England |
| Middlesbrough Ironopolis (Middlesbrough), England |
| Middlesex Wanderers, England |
| Middleton, England |
| Middleton Wanderers, England |
| Middlewich, England |
| Middlewich Athletic, England |
| Middlewich Rangers, England |
| Midhurst & Easebourne (Midhurst), England |
 | Midtjylland (Midtjylland), Denmark |
 | Miedź (Legnica), Poland |
| Miembeni (Zanzibar), Tanzania |
| Miembeni (Zanzibar), Zanzibar |
| Migdal (Carahasani), Moldova |
 | Mighty Barrolle (Monrovia), Liberia |
 | Mighty Blackpool (Freetown), Sierra Leone |
| Mighty Blue Angels (Monrovia), Liberia |
| Mighty Jets (Jos), Nigeria |
| Mighty Wanderers (Blantyre), Malawi |
| MIKA (Yerevan), Armenia |
| Mikkeli (Mikkeli), Finland |
| Mikoyan Myasokombinat (Moscow), USSR |
| Milan (Milan), Italy |
| Milani (Tsnori), Georgia |
| Milano (Kumanovo), North Macedonia |
| Mildenhall Town (Mildenhall), England |
| Mile Oak (Mile Oak), England |
| Mile Oak Rovers & Youth, England |
 | Milerock (Linden), Guyana |
| Milford Town, England |
| Military Police (Kampala ), Uganda |
| Millbrook (Millbrook), England |
| Millom Town, England |
 | Millonarios (Bogota), Colombia |
| Millwall (London), England |
| Millwall United, England |
| Milnthorpe Corinthians, England |
| Milo, Guinea |
| Milsami (Orhei), Moldova |
| Miltach (Miltach), FRG |
| Milton Keynes, England |
| Milton Keynes Borough, England |
| Milton Keynes City, England |
| Milton Keynes Dons (Milton Keynes), England |
| Milton Keynes Irish (Bletchley), England |
| Milton United (Milton), England |
| Mine Nr 30 (Rutchenkovo), USSR |
| Minehead (Minehead), England |
| Minehead Town, England |
| Mineiros Esporte Clube (Mineiros), Brazil |
| Mineros (Puerto Ordaz), Venezuela |
| Minerva, England |
| Minerva Punjab (Chandigarh), India |
| Minervén (Ciudad Guayana), Venezuela |
| Minija (Kretinga), Lithuania |
| Minnesota Kicks (Bloomington), USA |
| Minnesota Strikers (Minneapolis), USA |
| Minnesota United (Minneapolis), USA |
| Minyor (Pernik), Bulgaria |
 | Miracle Club (Bandrani), Comoros |
| Mirassol (Mirassol), Brazil |
 | Mirebalais (Mirebalais), Haiti |
| Mirfield United, England |
 | Misr El-Makasa (Faiyum), Egypt |
| Missile (Libreville), Gabon |
| Misto Esporte Clube (Três Lagoas), Brazil |
| Mitcham Wanderers, England |
| MITOS (Novocherkassk), Russia |
| Mitra Kutai (Tenggarong), Indonesia |
| Mixto (Cuiabá), Brazil |
| Mjällby (Hällevik), Sweden |
 | Mjølner (Narvik), Norway |
| Mjøndalen (Mjøndalen), Norway |
| MK Etanchéité (Kinshasa), DR Congo |
| MK Wolverton Town, England |
| MKT-Araz (Imisli), Azerbaijan |
 | Mladá Boleslav (Mladá Boleslav), Czech Republic |
| Mladi Radnik (Požarevac), Serbia |
| Mladost (Apatin), Serbia |
| Mladost (Lučani), Serbia |
| Mladost (Novi Sad), Serbia |
 | Mladost Donja Gorica (Podgorica), Montenegro |
| Mlandege (Pemba), Zanzibar |
| Mlandege (Zanzibar), Tanzania |
| MLF (Minsk), Belarus |
 | MMM (Toamasina), Madagascar |
| MNPZ (Mozyr), Belarus |
| MO Béjaïa (Béjaïa), Algeria |
| MO Constantine (Constantine), Algeria |
 | Moca (Moca), Dominican Republic |
| Mochudi Centre Chiefs (Mochudi), Botswana |
| Modèle (Lomé), Togo |
| Modena (Modena), Italy |
| Mödling (Mödling), Austria |
 | Modriča Maksima (Modriča), Bosnia and Herzegovina |
| MOFK (Orsha), Belarus |
| Mogadishu City (Mogadishu), Somalia |
| Mogadishu Municipality (Mogadishu), Somalia |
| Mogas 90 FC (Porto-Novo), Benin |
| Moghavemat Sepasi (Shiraz), Iran |
| Moghreb (Tétouan), Morocco |
| Mogi Mirim (Mogi Mirim), Brazil |
| Mogoditshane Fighters (Mogoditshane), Botswana |
| Mogren (Budva), Montenegro |
 | Mogren (Budva), Serbia and Montenegro |
 | Mohammedan (Dhaka), Bangladesh |
| Mohun Bagan (Kolkata), India |
| MOIK (Baku), Azerbaijan |
| Moira United, England |
| MOL Fehérvár (Székesfehérvár), Hungary |
| Mold, England |
| Molde (Molde), Norway |
| Moldova (Boroseni), Moldova |
| Moldova-03 (Ungheni), Moldova |
| Moldova-Gaz (Chişinău), Moldova |
| Mole Valley Predators, England |
| Mole Valley Sutton Common Road (Cobham), England |
| Molenbeek (Brussels), Belgium |
| Molesey (Molesey), England |
| Molniya (Kharkov), USSR |
| Molniya (Moscow), USSR |
| Molniya (Severodonetsk), Ukraine |
| Momchil yunak (Kavala), Bulgaria |
| Monaco (Monaco), France |
| Monagas (Maturín), Venezuela |
| Monarcas (Morelia), Mexico |
 | Monastirienne (Monastir), Tunisia |
| Monckton Athletic, England |
| Mond Nickel Works, England |
 | Mondercange (Mondercange), Luxembourg |
| Moneni Pirates (Manzini), Eswatini |
| Moneyfields (Portsmouth), England |
| Monks Hall, England |
| Monmouth Town, England |
| Monolit (Moscow), Russia |
| Monomotapa United (Harare), Zimbabwe |
| Monrovia Club Breweries (Monrovia), Liberia |
| Mons (Mons), Belgium |
 | Mons Calpe (Gibraltar), Gibraltar |
| Mont-Dore (Nouméa), New Caledonia |
| Montaxhnik (Mozyr), Belarus |
| Montazhnik (Turkestan), USSR |
 | Monte Carlo (Macau), Macau |
| Montegnée (Saint-Nicolas), Belgium |
 | Montego Bay United (Montego Bay), Jamaica |
| Monterrey (Monterrey), Mexico |
 | Montevideo City Torque (Montevideo), Uruguay |
| Montevideo Wanderers (Montevideo), Uruguay |
| Montijo (Montijo), Portugal |
| Montpellier (Montpellier), France |
| Montréal (Montreal), Canada |
| Montreal Impact (Montreal), Canada |
| Montreal Manic (Montreal), Canada |
| Montreal Olympique (Montreal), Canada |
 | Montrose (Montrose), Scotland |
| Montrose Works, England |
| Monza (Monza), Italy |
| Moor Green (Solihull), England |
| Moor Row Villa Rovers, England |
| Moore's Athletic, England |
| Mooroolbark (Melbourne), Australia |
| Mordovia (Saransk), Russia |
| More (Feodosiya), Ukraine |
| Morecambe (Morecambe), England |
| Moreirense (Guimaraes), Portugal |
| Moresby Park, England |
| Moresby Welfare Centre, England |
| Moreton Town, England |
| Mörfelden (Mörfelden-Walldorf), FRG |
| Morley, England |
| Mornar (Bar), Montenegro |
| Moro United (Morogoro), Tanzania |
| Morobe Wawens (Lae), Papua New Guinea |
| Moroka Swallows (Johannesburg), South Africa |
| Morpeth Harriers, England |
| Morpeth Town (Morpeth), England |
| Morris Motors (Cowley), England |
| Morris Sports, England |
| Morton Rangers, England |
| Mortons Athletic, England |
| Moscow-Ryazan Railway Branch (Moscow), USSR |
| Moscow-Yaroslavl Railway Branch (Moscow), USSR |
| Moselfeuer (Lehmen), FRG |
| Mosenergo (Moscow), Russia |
| Moskvich (Moscow), USSR |
| Mosquitos, England |
| Moss (Moss), Norway |
| Moss Bay, England |
| Moss Bay, England |
| Moss Bay Exchange, England |
| Moss Bay United, England |
| Mossley AFC (Mossley), England |
| Mosta (Mosta), Malta |
| Mostovik-Primorye (Ussuriysk), Russia |
| Mostransgaz (Gazoprovod), Russia |
| Motagua (Tegucigalpa), Honduras |
| Motala (Motala), Sweden |
| Motherwell (Motherwell), Scotland |
| Moto Club (São Luís), Brazil |
| Motor (Altenburg), GDR |
| Motor (Mezhdurechensk), USSR |
| Motor (Proletarskaya), USSR |
| Motor (Schwerin), GDR |
| Motor (Steinach), GDR |
| Motor (Suhl), GDR |
| Motor (Weimar), GDR |
| Motor Action (Harare), Zimbabwe |
| Motor Lublin (Lublin), Poland |
 | Moulien (Le Moule), Guadeloupe |
| Moulton Verdin, England |
| Mounana (Mounana), Gabon |
 | Mount Cameroon (Buéa), Cameroon |
| Mount Hill Enterprise, England |
| Mount Pleasant, England |
 | Mount Wellington (Auckland), New Zealand |
| Mountsorrel Town, England |
| Mouscron (Mouscron), Belgium |
| Mouscron-Péruwelz (Mouscron), Belgium |
| Mousehole (Mousehole), England |
| Mpumalanga Black Aces (Emalahleni), South Africa |
| Mretebi (Tbilisi), Georgia |
| Mtibwa Sugar Football Club (Turiani), Tanzania |
| MTK (Budapest), Hungary |
| Mtskheta Urioni (Mtskheta), Georgia |
| MTsOP (Tbilisi), USSR |
| MTsOP-Metallurg (Sverdlovsk), USSR |
| MTsOP-Termist (Baku), USSR |
| MTV Ingolstadt (Ingolstadt), FRG |
 | Muang Thong United (Pak Kret), Thailand |
 | Muara (Muara), Brunei |
| Műegyetemi AFC (Budapest), Hungary |
| Mufulira Wanderers (Mufulira), Zambia |
| Muğan (Salyan), Azerbaijan |
| Mühlburg (Karlsruher), FRG |
| Muktijoddha Sangsad (Dhaka), Bangladesh |
 | Mukungwa, Rwanda |
| Mukura Victory Sports (Butare), Rwanda |
| Mulbarton Wanderers (Mulbarton), England |
| Mülheim (Mülheim an der Ruhr), FRG |
| Mülheim (Mülheim-Kärlich), FRG |
| Mulhouse (Mulhouse), France |
| Mumbai City (Mumbai), India |
| Mumias Sugar (Mumias), Kenya |
| Munayly (Atyrau), Kazakhstan |
| Mundu SC, Zanzibar |
| Municipal (Ciudad de Guatemala), Guatemala |
 | Municipal (La Paz), Bolivia |
 | Municipal Liberia (Liberia), Costa Rica |
 | Munisport (Pointe-Noire), Congo |
| Muniz Freire Futebol Clube (Muniz Freire), Brazil |
| Munkacs (Mukacheve), Ukraine |
| Mura (Murska Subota), Slovenia |
 | Murata (Murata), San Marino |
| Murici Futebol Clube (Murici), Brazil |
| Murton, England |
| Murton Colliery Welfare, England |
| Murton Red Star, England |
| Muscat (Muscat), Oman |
| Mush (Charentsavan), USSR |
| Mushuc Runa (Ambato), Ecuador |
| Musongati (Gitega), Burundi |
| Muzinga FC (Bujumbura), Burundi |
| MVD Rossii (Moscow), Russia |
 | MVV (Maastricht), Netherlands |
| Mwana Africa (Bindura), Zimbabwe |
| Myasakambinat (Vitebsk), Belarus |
| Myasokombinat (Maykop), USSR |
| MyPa (Anjalankoski), Finland |
| Myr (Hornostayivka), Ukraine |
| Mysore State (Bangalore), India |
| Mytholmroyd, England |
| MZAL (Minsk), Belarus |
| Mziuri (Gali), Georgia |
