| Mark, Jan | Jan Mark | Adaptation, Dramaturg | 2002 - 2005 | 6 | |
| Marker, Alex | Alex Marker | Designer | 2004 | 1 | |
| Marker, Lise-Lone | Lise-Lone Marker | Translator | 1972 - 2018 | 15 | |
| Markham, Petra | Petra Markham | Actor | 2004 - 2016 | 8 | |
| Markkanen, Soili | Soili Markkanen | Actor | 1967 - 2012 | 4 | |
| Marko-Nord, Julia | Julia Marko-Nord | Actor | 2007 | 1 | |
| Marlatt, Richard | Richard Marlatt | Actor | 1999 | 1 | |
| Marlowe, Dorine | Dorine Marlowe | Actor | 1934 | 1 | |
| Marner, Carmela | Carmela Marner | Actor | 2006 | 1 | |
| Maron, Hanna | Hanna Maron | Actor | 1959 - 1966 | 2 | |
| Marr, Stacy | Stacy Marr | Actor | 2001 | 1 | |
| Marsh, Elliott | Elliott Marsh | Lighting Designer | 2008 | 1 | |
| Marshall, Stuart | Stuart Marshall | Designer | 2000 | 1 | |
| Martin, Adam | Adam Martin | Actor | 1975 | 1 | |
| Martin, Bob | Bob Martin | Lighting Designer, Sound Designer | 1990 | 2 | |
| Martin, Gundula | Gundula Martin | Costume Designer, Designer | 1987 - 2014 | 3 | |
| Martin, Harald | Harald Martin | Designer | 1954 - 1973 | 8 | |
| Martin, Klaus | Klaus Martin | Actor, Lighting Designer, Sound Designer | 1986 - 1999 | 3 | |
| Martin, Mooch | Mooch Martin | Costume Designer | 1990 | 1 | |
| Martinig, Aldo | Aldo Martinig | Composer | 1984 | 1 | |
| Marton, László | László Marton | Director | 2001 - 2005 | 5 | |
| Martynowicz, Henryk | Henryk Martynowicz | Actor | 1907 - 1913 | 5 | |
| Maruyama, Sadao | Sadao Maruyama | Actor, Director | 1925 - 1936 | 4 | |
| Marx, Paul | Paul Marx | Actor | 1905 - 1933 | 20 | |
| Marx-Aveling, Eleanor | Eleanor Marx-Aveling | Translator | 1891 - 2010 | 7 | |
| März, Daniela | Daniela März | Actor | 2001 - 2002 | 4 | |
| Marzewski, Lucjan | Lucjan Marzewski | Composer | 1989 | 1 | |
| Marzi, Davide | Davide Marzi | Actor | 1999 - 2000 | 4 | |
| Mascus, Hella-Birgit | Hella-Birgit Mascus | Actor | 1989 - 1990 | 2 | |
| Maskell, Robert | Robert Maskell | Actor | 2002 | 1 | |
| Maslon, Laurence | Laurence Maslon | Dramaturg | 1985 - 1995 | 3 | |
| Mason, Dan | Dan Mason | Actor | 1996 - 2013 | 3 | |
| Mason, Marsha | Marsha Mason | Actor | 1973 | 1 | |
| Massera, Jarmila | Jarmila Massera | Designer | 1971 | 1 | |
| Massey, Hart | Hart Massey | Actor | 2000 | 1 | |
| Masson, Ernst | Ernst Masson | Designer | 1973 | 1 | |
| Masteller, Kerry | Kerry Masteller | Actor | 2000 | 1 | |
| Małynicz, Zofia | Zofia Małynicz | Actor | 1958 | 1 | |
| Matela, Kimberly | Kimberly Matela | Costume Designer | 2006 | 2 | |
| Mathew, Gisela | Gisela Mathew | Actor | 1945 | 1 | |
| Matikainen, Osmo | Osmo Matikainen | Actor | 1983 - 2006 | 2 | |
| Matiki, Mafumu | Mafumu Matiki | Actor | 2006 | 23 | |
|
|
