| McCarthy, Eoin | Eoin McCarthy | Actor | 2000 - 2003 | 2 | |
| McCarthy, Helena | Helena McCarthy | Actor | 1994 | 6 | |
| McClure, Keven | Keven McClure | Actor | 1944 - 1945 | 4 | |
| McClure, Laura | Laura McClure | Actor | 1936 | 1 | |
| McCord, Catherine | Catherine McCord | Actor | 1935 | 1 | |
| McCourt, Margareth | Margareth McCourt | Actor | 1953 | 1 | |
| McCurty, Patricia | Patricia McCurty | Actor | 2003 | 1 | |
| McDonnell, Colleen | Colleen McDonnell | Actor | 2007 | 1 | |
| McDonnell, Owen | Owen McDonnell | Actor | 2005 | 1 | |
| McElhinney, Ian | Ian McElhinney | Actor | 1993 | 1 | |
| McElroy, Steve | Steve McElroy | Actor | 2003 | 1 | |
| McEnery, Peter | Peter McEnery | Actor | 1994 | 1 | |
| McFetridge, Paula | Paula McFetridge | Actor | 2000 | 1 | |
| McGill, John | John McGill | Actor | 2003 | 1 | |
| McGrath, Jeff | Jeff McGrath | Actor | 2003 | 1 | |
| McGrew, Melina | Melina McGrew | Actor | 2000 | 1 | |
| McHallem, Christopher | Christopher McHallem | Actor | 1992 | 3 | |
| McInerney, Bernie | Bernie McInerney | Actor | 1975 | 1 | |
| McKereghan, Kevin | Kevin McKereghan | Actor | 1971 | 1 | |
| McKereghan, William | William McKereghan | Actor | 1971 | 1 | |
| McKillop, Ann | Ann McKillop | Actor | 2004 | 1 | |
| McMillan, Carrie | Carrie McMillan | Actor | 1971 | 1 | |
| McMullan, Sherida | Sherida McMullan | Actor | 2001 | 1 | |
| McNae, Jenny | Jenny McNae | Actor | 1991 | 1 | |
| McNally, Mary | Mary McNally | Actor | 2000 | 1 | |
| McRae, Bruce | Bruce McRae | Actor | 1905 - 1908 | 7 | |
| McRae, Hilton | Hilton McRae | Actor | 1993 - 2003 | 3 | |
| McSorley, Gerard | Gerard McSorley | Actor | 1993 | 1 | |
| McTeer, Janet | Janet McTeer | Actor | 1996 - 1997 | 3 | 1 |
| McWilliams, Jack | Jack McWilliams | Actor | 1928 | 2 | |
| Meader, Derek | Derek Meader | Actor | 1975 - 1995 | 9 | |
| Medalis, Joseph | Joseph Medalis | Actor | 1974 | 1 | |
| Medina, Estela | Estela Medina | Actor | 1954 - 1979 | 3 | |
| Medina, Kristopher | Kristopher Medina | Actor | 2003 - 2011 | 35 | |
| Meduna, Jaromír | Jaromír Meduna | Actor | 1999 | 1 | |
| Mehring, Horst | Horst Mehring | Actor | 1971 - 1975 | 3 | |
| Meister, Karel | Karel Meister | Actor | 1961 - 1966 | 2 | |
| Meixner, Karl | Karl Meixner | Actor | 1928 - 1975 | 4 | |
| Mejlænder-Hellesen, Marie | Marie Mejlænder-Hellesen | Actor | 1891 - 1921 | 16 | |
| Melbourne, Dale | Dale Melbourne | Actor | 1944 - 1945 | 4 | |
| Melchert, Arne | Arne Melchert | Actor | 1924 - 1944 | 2 | |
| Melichar, Rudolf | Rudolf Melichar | Actor | 1957 - 2010 | 6 | |
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