| Murray Hill Theatre | Murray Hill Theatre | United States of America, New York, 160 E. 34th Street | 1905-04-30 | -- | 1905 | 2 | |
| Margaret Theatre | Margaret Theatre | United States of America, Anaconda | 1905-12-07 | 1905-12-07 | 1905 | 1 | |
| Metropolitan | Metropolitan | United States of America, Minneapolis | 1906-12-06 | 1910-08-10 | 1906–1910 | 2 | |
| Mattoon Theatre | Mattoon Theatre | United States of America, Mattoon | 1907-11-12 | 1907-11-12 | 1907 | 1 | |
| Mary Anderson Theatre | Mary Anderson Theatre | United States of America, Louisville | 1908-03-26 | 1908-03-30 | 1908 | 1 | |
| Music Hall | Music Hall | United States of America, Akron | 1908-04-10 | 1908-04-10 | 1908 | 1 | |
| Mohács | Mohács | Hungary, Mohács | 1908-06-17 | 1908-06-24 | 1908–1942 | 5 | |
| Mukačeve | Mukačeve | Ukraine, Mukačeve | 1909-01- | 1927-03-08 | 1909–1941 | 8 | |
| Metropolitan Theatre | Metropolitan Theatre | United States of America, Grand Forks, 116 South Third Street | 1909-01-27 | 1909-01-27 | 1909–1930 | 2 | |
| Montwhite | Montwhite | United States of America, Burlington | 1909-04-26 | 1909-04-26 | 1909 | 1 | |
| Münchner Künstlertheater | Münchner Künstlertheater | Germany, Munich | 1909-08-20 | -- | 1909 | 1 | |
| Masonic Temple | Masonic Temple | United States of America, Portland | 1910-02-28 | 1910-02-28 | 1910 | 1 | |
| Moore Theatre | Moore Theatre | United States of America, Seattle | 1910-07-27 | 1910-07-27 | 1910 | 1 | |
| Mezőkövesd | Mezőkövesd | Hungary, Mezőkövesd | 1910-10-03 | -- | 1910–1925 | 3 | |
| Muskogee High School | Muskogee High School | United States of America, Muskogee, 3200 E Shawnee Rd | 1910-12-23 | 1910-12-23 | 1910 | 1 | |
| Multnomah Hotel | Multnomah Hotel | United States of America, Portland | 1912-11-22 | 1912-11-22 | 1912 | 1 | |
| Městské divadlo České Budějovice | Městské divadlo České Budějovice | Czech Republic, České Budějovice | 1913-10-06 | -- | 1913 | 1 | |
| Münchener Künstler-Theater | Münchener Künstler-Theater | Germany, Munich | 1914-07-30 | -- | 1914 | 1 | |
| Mount Carmel High School | Mount Carmel High School | United States of America, Mount Carmel | 1914-11-27 | 1914-11-27 | 1914 | 1 | |
| Maskavas Latviešu teātris | Maskavas Latviešu teātris | Russia, Moscow, Moscow | 1917-01-14 | -- | 1917 | 1 | |
| Magyar Színház | Magyar Színház | Hungary, Budapest, Hevesi Sándor tér 4 | 1917-06-02 | 1925-06-19 | 1917–1930 | 6 | |
| Montréal | Montréal | Canada, Montréal | 1918-05-10 | -- | 1918 | 1 | |
| Marmorhaus | Marmorhaus | Germany, Berlin, Kurfürstendamm 236 | 1919-04-06 | -- | 1919 | 1 | |
| Mecklenburgisches Landestheater Schwerin | Mecklenburgisches Landestheater Schwerin | Germany, Schwerin, Blutstr. 16 19370 Parchim | 1919-11-02 | 1925-10-09 | 1919–1925 | 3 | |
| Maison de l'Oeuvre (Salle Berlioz) | Maison de l'Oeuvre (Salle Berlioz) | France, Paris, 55 Rue de Clichy | 1919-11-09 | 1920-09-23 | 1919–1926 | 6 | |
| Městské divadlo Na hradbách | Městské divadlo Na hradbách | Czech Republic, Brno | 1920-01-31 | -- | 1920–1928 | 3 | |
| Mandel Hall, University Of Chicago | Mandel Hall, University Of Chicago | United States of America, Chicago, 1131 East 57th Street | 1920-02-16 | 1981-02-22 | 1920–1981 | 2 | |
| Madách Kamara Színház | Madách Kamara Színház | Hungary, Budapest, Erzsébet körút 31 | 1920-04-15 | 1920-04-30 | 1920–1974 | 4 | |
| Manhattan Opera House | Manhattan Opera House | United States of America, New York, 311 West 34th St | 1920-09-06 | -- | 1920 | 1 | |
| Makedonski, Naroden, Teatar | Makedonski Naroden Teatar (Macedonian National Theatre) | Macedonia, Skopje, Iljo Vojvoda, Skopje 1000, Macedonia | 1922-03- | 2024-10-15 | 1922–2024 | 13 | |
| Markgräfliches Opernhaus Bayreuth | Markgräfliches Opernhaus Bayreuth | Germany, Bayreuth, Opernstraße 14 | 1922-09-23 | -- | 1922–1972 | 2 | |
| Metropolitan Opera House | Metropolitan Opera House | United States of America, New York, Lincoln Center Plaza | 1923-10-29 | -- | 1923 | 1 | |
| Masonic Hall | Masonic Hall | United States of America, Cleveland, 3615 Euclid Ave | 1924-04-09 | 1924-04-12 | 1924 | 1 | |
| Mosonmagyaróvár | Mosonmagyaróvár | Hungary, Mosonmagyaróvár | 1924-05-02 | -- | 1924–1936 | 4 | |
| Mátészalka | Mátészalka | Hungary, Mátészalka | 1925-07-16 | -- | 1925–1941 | 2 | |
| Mezőhegyes | Mezőhegyes | Hungary, Mezőhegyes | 1925-08-06 | -- | 1925 | 1 | |
| Mestno gledališče Celje | Mestno gledališče Celje | Slovenia, Celje | 1925-10-23 | -- | 1925–1934 | 2 | |
| Maddermarket Theatre | Maddermarket Theatre | England, Norwich, Norfolk, St Johns Alley | 1925-10-26 | 2002-02-02 | 1925–2002 | 21 | |
| Maxine Elliott's Theatre | Maxine Elliott's Theatre | United States of America, New York, 109 West 39th Street | 1925-11-10 | -- | 1925 | 1 | |
| Minnesota University Chapel | Minnesota University Chapel | United States of America, Minneapolis | 1926-02-16 | -- | 1926 | 1 | |
| Moson | Moson | Hungary, Mosonmagyaróvár | 1926-03-16 | -- | 1926 | 1 | |
| Mansfield Theatre | Mansfield Theatre | United States of America, New York, 256 W 47th St | 1927-01-10 | -- | 1927 | 1 | |
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