| Mittler, Carolin | Carolin Mittler | Designer | 1999 | 1 | |
| Marquardt, Jörg | Jörg Marquardt | Actor | 1999 | 1 | |
| Mühlhoff, Werner | Werner Mühlhoff | Actor | 1999 | 1 | |
| Maselli, Titina | Titina Maselli | Costume Designer, Designer | 1999 - 2000 | 22 | |
| Mari, Pasquale | Pasquale Mari | Lighting Designer | 1999 - 2000 | 11 | |
| Masson, Babette | Babette Masson | Actor | 1999 | 10 | |
| Moreau, Nathaël | Nathaël Moreau | Translator | 1999 | 10 | |
| Miller, Joseph | Joseph Miller | Actor | 1934 | 1 | |
| Mendick, Charles | Charles Mendick | Actor | 1934 | 1 | |
| Metzger, Stanley | Stanley Metzger | Actor | 1934 | 1 | |
| Molin, Conny | Conny Molin | Actor | 1934 | 2 | |
| Manstad, Margit | Margit Manstad | Actor | 1934 | 1 | |
| March, Elspeth | Elspeth March | Actor | 1934 - 1935 | 3 | |
| Melbārde, Ņina | Ņina Melbārde | Actor | 1934 - 1936 | 2 | |
| Martinsons, Kirils | Kirils Martinsons | Actor | 1934 | 1 | |
| Meninger, Frédérique | Frédérique Meninger | Actor | 1999 | 11 | |
| Maklakova, N. | N. Maklakova | Lighting Designer | 1999 - 2000 | 2 | |
| McBride, Wes | Wes McBride | Designer | 1999 | 1 | |
| Manson, Héléna | Héléna Manson | Actor | 1934 | 2 | |
| Montès, Robert | Robert Montès | Actor | 1934 | 2 | |
| McKinney, Duane | Duane McKinney | Actor | 1934 | 1 | |
| Marshall, Margaret | Margaret Marshall | Actor, Producer | 1934 | 2 | |
| Mitchell, Lee | Lee Mitchell | Designer | 1934 | 1 | |
| Moissi, Alessandro | Alessandro Moissi | | | | |
| Miotti, Gentile | Gentile Miotti | Actor | 1934 | 1 | |
| Mardikes, Tom | Tom Mardikes | Sound Designer | 1999 | 1 | |
| Mader, Travis | Travis Mader | Dramaturg | 1999 | 1 | |
| Möller, Mette | Mette Möller | Costume Designer | 1999 | 1 | |
| Meurer, Sandra | Sandra Meurer | Costume Designer, Designer | 1999 | 2 | |
| Moody, Jennifer | Jennifer Moody | Actor | 1999 | 1 | |
| Mosavi, Keyuan | Keyuan Mosavi | Actor | 1999 | 1 | |
| Monselle, Muriel | Muriel Monselle | Actor | 1935 | 1 | |
| Mencele, Amālija | Amālija Mencele | Actor | 1935 | 1 | |
| Morris, McKay | McKay Morris | Actor | 1935 - 1939 | 15 | |
| McKnight, Brian | Brian McKnight | Actor | 2000 | 1 | |
| Mardale, W. W. | W. W. Mardale | Actor | 1890 | 1 | |
| Mägi, Aleks | Aleks Mägi | Actor | 1935 | 1 | |
| Möller, Mizzi | Mizzi Möller | Actor | 1935 | 1 | |
| McCarthy, Sheila | Sheila McCarthy | Choreographer | 1935 - 1936 | 2 | |
| Menges, Herbert | Herbert Menges | Conductor | 1935 - 1944 | 3 | |
| Matthews, Douglas | Douglas Matthews | Actor | 1935 - 1936 | 2 | |
| Macleod, Barbara | Barbara Macleod | Actor | 1935 - 1936 | 2 | |
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