| Maskavas Latviešu teātris | Maskavas Latviešu teātris | Russia, Moscow, Moscow | 1917-01-14 | -- | 1917 | 1 | |
| Mount Carmel High School | Mount Carmel High School | United States of America, Mount Carmel | 1914-11-27 | 1914-11-27 | 1914 | 1 | |
| Münchener Künstler-Theater | Münchener Künstler-Theater | Germany, Munich | 1914-07-30 | -- | 1914 | 1 | |
| Městské divadlo České Budějovice | Městské divadlo České Budějovice | Czech Republic, České Budějovice | 1913-10-06 | -- | 1913 | 1 | |
| Multnomah Hotel | Multnomah Hotel | United States of America, Portland | 1912-11-22 | 1912-11-22 | 1912 | 1 | |
| Muskogee High School | Muskogee High School | United States of America, Muskogee, 3200 E Shawnee Rd | 1910-12-23 | 1910-12-23 | 1910 | 1 | |
| Mezőkövesd | Mezőkövesd | Hungary, Mezőkövesd | 1910-10-03 | -- | 1910–1925 | 3 | |
| Moore Theatre | Moore Theatre | United States of America, Seattle | 1910-07-27 | 1910-07-27 | 1910 | 1 | |
| Masonic Temple | Masonic Temple | United States of America, Portland | 1910-02-28 | 1910-02-28 | 1910 | 1 | |
| Münchner Künstlertheater | Münchner Künstlertheater | Germany, Munich | 1909-08-20 | -- | 1909 | 1 | |
| Montwhite | Montwhite | United States of America, Burlington | 1909-04-26 | 1909-04-26 | 1909 | 1 | |
| Metropolitan Theatre | Metropolitan Theatre | United States of America, Grand Forks, 116 South Third Street | 1909-01-27 | 1909-01-27 | 1909–1930 | 2 | |
| Mukačeve | Mukačeve | Ukraine, Mukačeve | 1909-01- | 1927-03-08 | 1909–1941 | 8 | |
| Mohács | Mohács | Hungary, Mohács | 1908-06-17 | 1908-06-24 | 1908–1942 | 5 | |
| Music Hall | Music Hall | United States of America, Akron | 1908-04-10 | 1908-04-10 | 1908 | 1 | |
| Mary Anderson Theatre | Mary Anderson Theatre | United States of America, Louisville | 1908-03-26 | 1908-03-30 | 1908 | 1 | |
| Mattoon Theatre | Mattoon Theatre | United States of America, Mattoon | 1907-11-12 | 1907-11-12 | 1907 | 1 | |
| Metropolitan | Metropolitan | United States of America, Minneapolis | 1906-12-06 | 1910-08-10 | 1906–1910 | 2 | |
| Margaret Theatre | Margaret Theatre | United States of America, Anaconda | 1905-12-07 | 1905-12-07 | 1905 | 1 | |
| Murray Hill Theatre | Murray Hill Theatre | United States of America, New York, 160 E. 34th Street | 1905-04-30 | -- | 1905 | 2 | |
| Majestic Theatre | Majestic Theatre | United States of America, San Francisco | 1905-04-04 | 1905-04-04 | 1905 | 1 | |
| Music Hall Chicago | Music Hall Chicago | United States of America, Chicago, 1020 W Sheridan Rd | 1905-03-29 | 1907-06-08 | 1905–1907 | 3 | |
| Midland Hotel Theatre | Midland Hotel Theatre | England, Manchester, 16 Peter Street | 1905-03-24 | -- | 1905 | 1 | |
| Moscow | Moscow | Russia, Moscow | 1904-04-29 | 2014-10-06 | 1904–2014 | 15 | |
| Margaret Theater | Margaret Theater | United States of America, Anaconda | 1904-02-25 | 1904-02-25 | 1904 | 1 | |
| Marquam Grand Theatre | Marquam Grand Theatre | United States of America, Portland | 1904-01-27 | 1904-01-28 | 1904 | 1 | |
| McKissick's Opera House | McKissick's Opera House | United States of America, Reno | 1904-01-16 | 1907-01-09 | 1904–1907 | 3 | |
| Macdonough Theatre | Macdonough Theatre | United States of America, Oakland | 1904-01-08 | 1908-12-16 | 1904–1908 | 7 | |
| Madison | Madison | United States of America, Madison | 1903-12-25 | 1903-12-25 | 1903 | 1 | |
| Mason Opera House | Mason Opera House | United States of America, Los Angeles | 1903-12-24 | 1910-06-29 | 1903–1910 | 4 | |
| Myar Opera House | Myar Opera House | United States of America, El Paso | 1903-12-10 | 1903-12-10 | 1903 | 1 | |
| Marion | Marion | United States of America, Marion | 1903-12-07 | 1903-12-07 | 1903 | 1 | |
| Masonic Opera House | Masonic Opera House | United States of America, Chillicothe | 1903-12-05 | 1908-04-06 | 1903–1908 | 2 | |
| Marquette | Marquette | United States of America, Marquette | 1903-11-24 | 1903-11-24 | 1903 | 1 | |
| Milwaukee | Milwaukee | United States of America, Milwaukee | 1903-11-12 | 1903-11-14 | 1903 | 1 | |
| Mankato | Mankato | United States of America, Mankato | 1903-11-09 | 1903-11-09 | 1903 | 1 | |
| Montgomery Theatre | Montgomery Theatre | United States of America, Montgomery | 1903-10-24 | 1904-11-12 | 1903–1904 | 3 | |
| Mansfield | Mansfield | United States of America, Mansfield | 1903-10-23 | 1903-10-23 | 1903 | 1 | |
| Maryland Theatre | Maryland Theatre | United States of America, Baltimore | 1903-10-21 | 1903-10-21 | 1903 | 1 | |
| Metropol-Theater | Metropol-Theater | Germany, Berlin, Friedrichstraße 100-102 | 1903-09-23 | 1905-06-11 | 1903–1910 | 4 | |
| Mykolaiv | Mykolaiv | Ukraine, Mykolaiv | 1903-03-04 | 1904-02-22 | 1903–1904 | 3 | |
| Mrs. Osborn's Theatre | Mrs. Osborn's Theatre | United States of America, New York, 44th St., near 5th Ave | 1903-03-03 | -- | 1903 | 1 | |
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