| Milarch, Carla | Carla Milarch | Actor | 2006 | 1 | |
| Miles, Katrina | Katrina Miles | Actor | 2005 - 2006 | 3 | |
| Militaru, Sorin | Sorin Militaru | Director | 2006 | 2 | |
| Miller, Elijah | Elijah Miller | Actor | 2006 | 1 | |
| Miller, Lionel | Lionel Miller | Actor | 1933 | 1 | |
| Miller, Manfred | Manfred Miller | Designer | 1947 - 1963 | 4 | |
| Miller, Maya | Maya Miller | Actor | 2000 | 1 | |
| Millot, Charles | Charles Millot | Actor | 1957 - 1980 | 3 | |
| Mills, Dana | Dana Mills | Actor | 1974 | 1 | |
| Mills, James | James Mills | Actor | 1974 | 1 | |
| Mills, Liz | Liz Mills | Director | 1995 | 1 | |
| Milotová, Bárbora | Bárbora Milotová | Actor | 2004 - 2005 | 4 | |
| Minami, Masahiro | Masahiro Minami | Designer | 1990 | 1 | |
| Minazzoli, Christiane | Christiane Minazzoli | Actor | 1991 | 1 | |
| Ming-ho, Ho | Ho Ming-ho | Actor | 2001 | 1 | |
| Minguell, Josep | Josep Minguell | Actor | 1988 - 1997 | 2 | |
| Ming-yiu, Cheung | Cheung Ming-yiu | Actor | 2001 | 1 | |
| Minot, Anna | Anna Minot | Actor | 1950 - 1995 | 3 | |
| Mirnik, Cveta | Cveta Mirnik | Costume Designer | 1979 - 1986 | 2 | |
| Mirza, Daud | Daud Mirza | Actor | 1992 | 1 | |
| Mitarbeit, Kxnstlerische | Kxnstlerische Mitarbeit | | | | |
| Mitchell, Charlie | Charlie Mitchell | Actor | 2008 | 1 | |
| Mitchell, Chris | Chris Mitchell | Dramaturg | 2003 | 1 | |
| Mitchell, Maude | Maude Mitchell | Actor, Adaptation, Dramaturg | 2003 - 2011 | 102 | |
| Mitchell, Molly | Molly Mitchell | Actor | 1971 | 1 | |
| Mitchell, Robert | Robert Mitchell | Actor, Designer, Director | 1927 - 1951 | 8 | |
| Mitchell, Ruth | Ruth Mitchell | Actor | 1994 - 2005 | 7 | |
| Mitra, Sambhu | Sambhu Mitra | Actor, Adaptation, Director, Translator | 1952 - 2002 | 10 | |
| Mitzscherling, Barbara | Barbara Mitzscherling | Actor | 1966 | 1 | |
| Mitzscherling, Joachim | Joachim Mitzscherling | Actor | 1966 | 1 | |
| Mitzscherling, Klaus-Peter | Klaus-Peter Mitzscherling | Actor | 1966 | 1 | |
| Miura, Chieko | Chieko Miura | Actor | 1999 - 2002 | 4 | |
| Miyauchi, Mitsuya | Mitsuya Miyauchi | Translator | 1986 | 1 | |
| Mladeck, Kyra | Kyra Mladeck | Actor | 1971 - 2003 | 4 | |
| Moan, Henny | Henny Moan | Actor | 1957 - 2013 | 64 | |
| Mochizuki, Michiharu | Michiharu Mochizuki | Actor | 1983 - 1994 | 3 | |
| Möckel, Manfred | Manfred Möckel | Dramaturg | 1967 | 1 | |
| Mockeridge, Jeremy | Jeremy Mockeridge | Actor | 2001 | 1 | |
| Modén, Mirja | Mirja Modén | Actor | 1989 - 1991 | 3 | |
| Moder, Janko | Janko Moder | Translator | 1970 - 2019 | 15 | |
| Modjeska, Helena | Helena Modjeska | Actor | 1883 | 1 | |
| Modugno, Lodovica | Lodovica Modugno | Actor | 1969 - 1974 | 4 | |
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