| Mallik, Linda | Linda Mallik | Musical Director | 1989 - 1998 | 2 | |
| Maczka, Bonnie | Bonnie Maczka | Actor | 2003 | 1 | |
| Miller, Rachel Ruth | Rachel Ruth Miller | Actor | 2003 | 1 | |
| Misseldine, Cassie | Cassie Misseldine | Actor | 2003 | 1 | |
| Mendès, Natacha | Natacha Mendès | Actor | 2003 - 2004 | 4 | |
| Mason, Chad | Chad Mason | Actor, Musical Director | 2001 | 6 | |
| McCormick, Bonnie | Bonnie McCormick | Actor | 2003 | 1 | |
| Mészáros, Károly | Károly Mészáros | Actor | 1989 | 3 | |
| Morellini, Marco | Marco Morellini | Actor | 2001 | 2 | |
| Maggi, Chicco | Chicco Maggi | Actor | 2001 | 2 | |
| Micoleau, Tyler | Tyler Micoleau | Lighting Designer | 2003 - 2009 | 3 | |
| Maas, Annette | Annette Maas | Actor | 2003 | 1 | |
| Medgyessy, Pál | Pál Medgyessy | Actor | 1999 | 1 | |
| Marvel, Steve | Steve Marvel | Actor | 2001 | 1 | |
| Marsh, Roy | Roy Marsh | Actor | 2001 | 1 | |
| McConnell, Maureen | Maureen McConnell | Actor | 2001 | 1 | |
| McConnell, Phil | Phil McConnell | Director | 2001 | 1 | |
| Muniz, Jorge | Jorge Muniz | Actor | 2001 | 1 | |
| Menke, Jeanne | Jeanne Menke | Actor | 2001 | 1 | |
| Maré, Vilma | Vilma Maré | Costume Designer | 2003 | 1 | |
| M. Covach, David | David M. Covach | Costume Designer | 2003 | 1 | |
| Methven, Eleanor | Eleanor Methven | Actor | 2003 | 1 | |
| Mátray, László | László Mátray | Actor | 1999 - 2015 | 2 | |
| Mauer, Anika | Anika Mauer | Actor | 2003 | 2 | |
| Márton, Lóránt | Lóránt Márton | Actor | 1999 | 1 | |
| Mbatha-Raw, Gugu | Gugu Mbatha-Raw | Actor | 2003 | 2 | |
| Murray, Catherine | Catherine Murray | Actor | 2003 | 2 | |
| Medina, Hugo | Hugo Medina | Actor | 2003 - 2011 | 2 | |
| McGregor-Laine, Susan | Susan McGregor-Laine | Actor | 2003 - 2007 | 2 | |
| Mertz, Doug | Doug Mertz | Actor | 2003 | 1 | |
| MacVittie, Bruce | Bruce MacVittie | Actor | 2003 | 1 | |
| May, Andrew | Andrew May | Actor | 2003 | 1 | |
| McNulty, Nancy | Nancy McNulty | Actor | 2003 | 2 | |
| Munderloh, Otts | Otts Munderloh | Sound Designer | 2003 | 1 | |
| Massányi, Viktor | Viktor Massányi | Actor | 2007 | 1 | |
| Murár, Györgyi | Györgyi Murár | Actor | 2007 | 1 | |
| Magnusson, Douglas | Douglas Magnusson | Actor | 2003 | 4 | |
| Mork, Linn | Linn Mork | Actor | 2003 | 1 | |
| Munkhammar, Anna | Anna Munkhammar | Actor | 2003 | 1 | |
| Mattsson, Mirijam | Mirijam Mattsson | Actor | 2003 | 1 | |
| Mähler Andersson, Johanna | Johanna Mähler Andersson | Actor | 2003 | 2 | |
| Morais, Alexandre | Alexandre Morais | Actor | 2003 | 1 | |
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