| Musikefterskolen i Humble | Musikefterskolen i Humble | Denmark, Humble, Hovedgaden 21 | 2013-10-21 | -- | 2013 | 1 | |
| Minard | Minard | Belgium, Gent, Korianderstraat 13 | 2013-02-28 | 2014-05-03 | 2013–2014 | 2 | |
| Merchant’s House Museum | Merchant’s House Museum | United States of America, New York, 29 E 4th St | 2011-07-07 | 2011-07-17 | 2011 | 1 | |
| Marlborough College | Marlborough College | England, Marlborough, Wiltshire, Bath Road | 1999-04-29 | -- | 1999 | 1 | |
| Moray House Theatre | Moray House Theatre | Scotland, Edinburgh | 1969-11-25 | -- | 1969 | 1 | |
| Městské oblastní divadlo | Městské oblastní divadlo | Czech Republic, Kolín | -- | -- | | | |
| Music and Dramatic Arts Building, Louisiana State University | Music and Dramatic Arts Building, Louisiana State University | United States of America, Baton Rouge | 1937-01-14 | 1999-10-02 | 1937–1999 | 2 | |
| Manhatten | Manhatten | United States of America, New York | 1989-01-24 | -- | 1989 | 1 | |
| Molesworth Hall | Molesworth Hall | Ireland, Dublin, Molesworth St | 1897-12-14 | 1906-12-08 | 1897–1906 | 2 | |
| Mascheranova, Teatro | Teatro Mascheranova | Italy, Pontecagnano Faiano, Via Isonzo, 6-10 | 2018-02-17 | 2018-03-11 | 2018 | 1 | |
| Mitropolia Moldovei si Bucovinei | Mitropolia Moldovei si Bucovinei | Romania, Iasi, Bulevardul Ștefan cel Mare și Sfânt 16 | 2006-06-11 | -- | 2006 | 1 | |
| Meteleu(Scutelnici) | Meteleu (Scutelnici) | Romania, Meteleu(Scutelnici) | -- | -- | | | |
| Marloo Theatre | Marloo Theatre | Australia, Greenmount, 20 Marloo Road | 2008-07-16 | 2008-08-02 | 2008 | 1 | |
| Mecklenburgisches Landestheater Schwerin | Mecklenburgisches Landestheater Schwerin | Germany, Schwerin, Blutstr. 16 19370 Parchim | 1919-11-02 | 1925-10-09 | 1919–1925 | 3 | |
| Mary Anderson Theatre | Mary Anderson Theatre | United States of America, Louisville | 1908-03-26 | 1908-03-30 | 1908 | 1 | |
| Mezinárodní festival Divadlo | Mezinárodní festival Divadlo | Czech Republic, Plzeň, Pražská 19 | 2007-09-20 | -- | 2007 | 1 | |
| MIT Kresge Little Theatre | MIT Kresge Little Theatre | United States of America, Cambridge, 48 Massachusetts Ave (in MIT Kresge Auditorium) | 1998-05-07 | 1998-05-09 | 1998 | 1 | |
| Málaga | Málaga | Spain, Málaga | 1975-08-28 | -- | 1975 | 1 | |
| Mandal videregående skole | Mandal videregående skole | Norway, Mandal, Kallhammerveien 6 | 2006-03-20 | -- | 2006 | 1 | |
| Madhusudan Mancha | Madhusudan Mancha | India, Kolkata, Gariahat Rd, Dhakuria, Babu Bagan, Selimpur, Jodhpur Park | 2010-03-10 | -- | 2010 | 1 | |
| Moskovski teatr "Angažement" | Moskovski teatr "Angažement" | Russia, Moscow | 1998-- | -- | 1998 | 1 | |
| Montwhite | Montwhite | United States of America, Burlington | 1909-04-26 | 1909-04-26 | 1909 | 1 | |
| Mikkelin Teatteri | Mikkelin Teatteri | Finland, Mikkeli, Savilahdenkatu 11 | 1980-02-21 | -- | 1980 | 1 | |
| Metro Arts | Metro Arts | Australia, Brisbane, Edward St | 1994-03-01 | 1994-03-05 | 1994 | 1 | |
| Murfatlar (Basarabi) | Murfatlar (Basarabi) | Romania, Murfatlar (Basarabi) | -- | -- | | | |
| Malmö Stadsteater | Malmö Stadsteater | Sweden, Malmö, Kalendegatan 12 | 1951-11-29 | 2023-01-28 | 1951–2022 | 9 | |
| Mahenovo divadlo | Mahenovo divadlo | Czech Republic, Brno, Malinovského náměstí 1 | 1966-03-04 | 2018-06-05 | 1966–2017 | 3 | |
| Malta Festival Poznań | Malta Festival Poznań | Poland, Poznań | 2013-06-24 | 2013-06-25 | 2013 | 1 | |
| Moelv | Moelv | Norway, Moelv | 1966-04-23 | -- | 1966–1991 | 3 | |
| Malvern Theatres - Festival Theatre | Malvern Theatres - Festival Theatre | England, Malvern, Worcestershire, Grange Road | 1950-07-24 | 2013-11-30 | 1950–2013 | 8 | |
| Mad Cow Theatre | Mad Cow Theatre | United States of America, Orlando, Church Street Market, 54 W Church St | 2002-06-06 | 2012-03-25 | 2002–2012 | 2 | |
| Mendel Art Gallery | Mendel Art Gallery | Canada, Saskatoon, 950 Spadina Crescent E | 1975-03-02 | -- | 1975 | 1 | |
| Moscow | Moscow | Russia, Moscow | 1904-04-29 | 2014-10-06 | 1904–2014 | 15 | |
| Meerbusch | Meerbusch | Germany, Meerbusch | -- | -- | | | |
| Melhus | Melhus | Norway, Melhus | 1991-10-14 | -- | 1991–2002 | 3 | |
| Modum Kulturhuset | Modum Kulturhuset | Norway, Vikersund, Rådhusveien 1 | 1993-02-14 | 2015-11-08 | 1993–2022 | 12 | |
| Magnetic Theatre, The | The Magnetic Theatre | United States of America, Asheville, 375 Depot St | 2018-04-19 | 2018-05-05 | 2018 | 1 | |
| Münchner Schauspielhaus | Münchner Schauspielhaus | Germany, Munich, Neuturmstraße 1 | 1897-11-17 | 1993-04-29 | 1897–1991 | 5 | |
| Moyse Hall | Moyse Hall | Canada, Montréal, 853 Rue Sherbrooke O | 1933-10-18 | 1933-10-21 | 1933 | 1 | |
| M. Lermontov State Academic Russian Drama Theather | Russkiy Respublikanskiy Dramaticheskiy Teatr Im. M.yu. Lermontova (M. Lermontov State Academic Russian Drama Theather) | Russia, Abakan, Republic of Khakassia, Ulitsa Shchetinkina 12 | 2023-05-26 | 2023-05-27 | 2023 | 1 | |
| Montréal | Montréal | Canada, Montréal | 1918-05-10 | -- | 1918 | 1 | |
| Medborgarhuset | Medborgarhuset | Sweden, Vansbro, Norra Allégatan 30 | 2010-10-28 | -- | 2010 | 1 | |
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