| Matsumoto | Matsumoto | Japan, Matsumoto | -- | -- | | | |
| Michael Schimmel Center for the Arts | Michael Schimmel Center for the Arts | United States of America, New York, Spruce Street | -- | -- | | | |
| Mărăşeşti | Mărăşeşti | Romania, Mărăşeşti | -- | -- | | | |
| Meiningen | Meiningen | Germany, Meiningen | -- | -- | | | |
| Miorcani (Rădăuţi-Prut) | Miorcani (Rădăuţi-Prut) | Romania, Miorcani (Rădăuţi-Prut) | -- | -- | | | |
| Murnau | Murnau | United States of America, Murnau | -- | -- | | | |
| Murfatlar (Basarabi) | Murfatlar (Basarabi) | Romania, Murfatlar (Basarabi) | -- | -- | | | |
| Matsuyama | Matsuyama | Japan, Matsuyama | -- | -- | | | |
| Městské oblastní divadlo | Městské oblastní divadlo | Czech Republic, Kolín | -- | -- | | | |
| Marinello Little Theatre | Marinello Little Theatre | United States of America, Cleveland | -- | -- | | | |
| Mélo d'Amélie | Mélo d'Amélie | France, Paris, 4 Rue Marie Stuart | -- | -- | | | |
| Meerbusch | Meerbusch | Germany, Meerbusch | -- | -- | | | |
| Mannheim | Mannheim | Germany, Mannheim | -- | -- | | | |
| Meteleu(Scutelnici) | Meteleu (Scutelnici) | Romania, Meteleu(Scutelnici) | -- | -- | | | |
| Micşuneştii Mari | Micşuneştii Mari | Romania, Micşuneştii Mari | -- | -- | | | |
| Mito | Mito | Japan, Mito | -- | -- | | | |
| Manhatten | Manhatten | United States of America, Manhatten | -- | -- | | | |
| Mărculeşti | Mărculeşti | Romania, Mărculeşti | -- | -- | | | |
| Middelburg | Middelburg | Netherlands, Middelburg | -- | -- | | | |
| Mogilev Regional Puppet Theater | Mogilev Regional Puppet Theater | Belarus | -- | -- | | | |
| Mexico City | Mexico City | Mexico, Mexico City | -- | -- | | | |
| Murighiol | Murighiol | Romania, Murighiol | -- | -- | | | |
| Molun zhongxue (Molun School) | Molun zhongxue (Molun School) | China, Shanghai | -- | -- | | | |
| Marrucino | Teatro | Italy, Chieti | -- | -- | | | |
| Măcin | Măcin | Romania, Măcin | -- | -- | | | |
| Mátray Béla Társulata | Mátray Béla Társulata | Romania, Arad | -- | -- | | | |
| Moineşti | Moineşti | Romania, Moineşti | -- | -- | | | |
| Manchester | Manchester | England, Manchester | -- | -- | | | |
| Melbourne | Melbourne | Australia, Melbourne | -- | -- | | | |
| Magdeburg | Magdeburg | Germany, Magdeburg | -- | -- | | | |
| Moreni | Moreni | Romania, Moreni | -- | -- | | | |
| Muhlenberg College Theatre | Muhlenberg College Theatre | United States of America | -- | -- | | | |
| Marion | Marion | United States of America, Marion | 1903-12-07 | 1903-12-07 | 1903 | 1 | |
| Myar Opera House | Myar Opera House | United States of America, El Paso | 1903-12-10 | 1903-12-10 | 1903 | 1 | |
| Mesterfjellet ungdomsskole | Mesterfjellet ungdomsskole | Norway, Larvik, Kristian Fredriks vei 3 | 2007-02-08 | -- | 2007 | 1 | |
| Modena | Modena | Italy, Modena | 1900-11-08 | -- | 1900 | 1 | |
| MeX Theater | MeX Theater | United States of America, Louisville, Kentucky Center for the Performing Arts, 501 W Main St | 2004-09-23 | 2004-10-02 | 2004 | 1 | |
| Museum of the Rockies | Museum of the Rockies | United States of America, Montana, 600 West Kagy Blvd Bozeman | 2019-10-10 | 2019-10-20 | 2019 | 1 | |
| Maltings | Maltings | England, Berwick-upon-Tweed, Eastern Ln | 2011-06-16 | -- | 2011 | 1 | |
| Margarethakirkens ruin, Maridalen | Margarethakirkens ruin, Maridalen | Norway, Oslo | 1985-08-17 | 1985-08-25 | 1985 | 1 | |
| McKinleyville High School | McKinleyville High School | United States of America, McKinleyville, 1300 Murray Rd | 2005-12-05 | -- | 2005 | 1 | |
| Matienzo Cultural Club | Matienzo Cultural Club | Argentina, Buenos Aires, Pringles 1249 | 2018-07-31 | 2018-07-31 | 2018 | 1 | |
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