| McSorley’s Square | McSorley’s Square | Vietnam, Ho Chi Minh City, 4 Thao Dien, District 2 | 2014-06-12 | 2014-06-15 | 2014 | 1 | |
| Montevideo | Montevideo | Uruguay, Montevideo | 1897-08- | -- | 1897–1974 | 3 | |
| Mescal Hornbeck Community Center | Mescal Hornbeck Community Center | United States of America, Woodstock, 56 Rock City Rd | 2025-03-14 | 2025-03-30 | 2025 | 1 | |
| Maverick Theatre | Maverick Theatre | United States of America, Woodstock, 120 Maverick Rd | 1934-08-09 | 1937-07-25 | 1934–1937 | 2 | |
| Mainstage Theatre | Mainstage Theatre | United States of America, Wilmington, 601 S College Rd | 2018-04-19 | 2018-04-22 | 2018 | 1 | |
| Moore Theatre | Moore Theatre | United States of America, Seattle | 1910-07-27 | 1910-07-27 | 1910 | 1 | |
| Morgan-Wixson Theatre | Morgan-Wixson Theatre | United States of America, Santa Monica, 2627 Pico Blvd | 2010-09-25 | 2010-10-17 | 2010 | 1 | |
| Main, The | The Main | United States of America, Santa Clarita, 24266 Main Street | 2018-06-22 | 2018-06-24 | 2018 | 1 | |
| Majestic Theatre | Majestic Theatre | United States of America, San Francisco | 1905-04-04 | 1905-04-04 | 1905 | 1 | |
| Mandell Weiss Theater | Mandell Weiss Theater | United States of America, San Diego, Revelle College Dr | 1998-05-19 | 2014-02-08 | 1998–2014 | 2 | |
| Metropolitan Hotel | Metropolitan Hotel | United States of America, Salt Lake City | 1893-03-24 | 1893-03-24 | 1893 | 1 | |
| Meadow Brook Theatre | Meadow Brook Theatre | United States of America, Rochester, 207 Wilson Blvd | 1967-11-10 | -- | 1967 | 1 | |
| McKissick's Opera House | McKissick's Opera House | United States of America, Reno | 1904-01-16 | 1907-01-09 | 1904–1907 | 3 | |
| Miller Center for the Arts, Reading Area Community College | Miller Center for the Arts, Reading Area Community College | United States of America, Reading, 4 N 2nd S | 2009-11-12 | -- | 2009 | 1 | |
| Margetts Theatre | Margetts Theatre | United States of America, Provo, Franklin S. Harris Fine Arts Center | 2012-02-29 | 2012-03-10 | 2012 | 1 | |
| McCarter Theatre | McCarter Theatre | United States of America, Princeton, 91 University Place | 1973-03-29 | 1996-05-26 | 1973–1996 | 3 | |
| Marquam Grand Theatre | Marquam Grand Theatre | United States of America, Portland | 1904-01-27 | 1904-01-28 | 1904 | 1 | |
| Multnomah Hotel | Multnomah Hotel | United States of America, Portland | 1912-11-22 | 1912-11-22 | 1912 | 1 | |
| Masonic Temple | Masonic Temple | United States of America, Portland | 1910-02-28 | 1910-02-28 | 1910 | 1 | |
| Media | Media | United States of America, Pennsylvania | 1931-10-30 | 1941-05-14 | 1931–1939 | 4 | |
| 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 | |
| Mulitz-Gudelsky Theatre Lab | Mulitz-Gudelsky Theatre Lab | United States of America, Olney, 2001 Olney Sandy Spring Rd | 2006-06-20 | 2006-08-27 | 2006 | 2 | |
| Macdonough Theatre | Macdonough Theatre | United States of America, Oakland | 1904-01-08 | 1908-12-16 | 1904–1908 | 7 | |
| Museum of Contemporary Art | Museum of Contemporary Art | United States of America, North Adams, 87 Marshall Street | 2006-04-07 | -- | 2006 | 1 | |
| Maudslay State Park | Maudslay State Park | United States of America, Newburyport, 74 Curzon Mill Rd | 2008-07-19 | 2008-08-10 | 2008 | 1 | |
| Mitzi E. Newhouse Theater | Mitzi E. Newhouse Theater | United States of America, New York, West 65th Street | 2025-03-18 | 2025-04-26 | 2025 | 1 | |
| Michael Schimmel Center for the Arts | Michael Schimmel Center for the Arts | United States of America, New York, Spruce Street | -- | -- | | | |
| Metropolitan Opera House | Metropolitan Opera House | United States of America, New York, Lincoln Center Plaza | 1923-10-29 | -- | 1923 | 1 | |
| Mrs. Osborn's Theatre | Mrs. Osborn's Theatre | United States of America, New York, 44th St., near 5th Ave | 1903-03-03 | -- | 1903 | 1 | |
| Manhattan Opera House | Manhattan Opera House | United States of America, New York, 311 West 34th St | 1920-09-06 | -- | 1920 | 1 | |
| McMillan Theater | McMillan Theater | United States of America, New York, 2960 Broadway | 1937-03-13 | -- | 1937 | 1 | |
| 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 | |
| Mansfield Theatre | Mansfield Theatre | United States of America, New York, 256 W 47th St | 1927-01-10 | -- | 1927 | 1 | |
| Morosco Theatre | Morosco Theatre | United States of America, New York, 217 West 45th Street | 1937-12-27 | 1938-04-30 | 1937 | 1 | |
| Murray Hill Theatre | Murray Hill Theatre | United States of America, New York, 160 E. 34th Street | 1905-04-30 | -- | 1905 | 2 | |
| Maxine Elliott's Theatre | Maxine Elliott's Theatre | United States of America, New York, 109 West 39th Street | 1925-11-10 | -- | 1925 | 1 | |
| Manhattan Theatre | Manhattan Theatre | United States of America, New York, 102 W. 33rd St | 1902-05-21 | 1902-05-30 | 1902–1905 | 6 | |
| Musical Theatre Works (MTW) | Musical Theatre Works (MTW) | United States of America, New York | 2000-11-03 | 2000-11-12 | 2000 | 1 | |
| Masque Theater | Masque Theater | United States of America, New York | 1966-04-18 | -- | 1966 | 1 | |
| Master Institute Theatre | Master Institute Theatre | United States of America, New York | 1947-04-26 | 1947-05-02 | 1947 | 1 | |
| Manhatten | Manhatten | United States of America, New York | 1989-01-24 | -- | 1989 | 1 | |
| Mystic Seaport Museum | Mystic Seaport Museum | United States of America, Mystic, 75 Greenmanville Avenue | 2022-07-16 | -- | 2022 | 1 | |
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