| McDonnell, Emily, Cass | Emily Cass McDonnell | Actor | 2013 | 1 | |
| McDonnell, Ian | Ian McDonnell | Actor | 2013 | 2 | |
| McDonnell, Mary | Mary McDonnell | Actor | 1974 - 1986 | 2 | 1 |
| McDonnell, Owen | Owen McDonnell | Actor | 2005 | 1 | |
| McDonnell, P.J. | P. J. McDonnell (P.J. McDonnell) | Actor | 1923 | 2 | |
| McDonough, Corinne | Corinne McDonough | Actor | 1911 | 1 | |
| McDonough, Emma | Emma McDonough | Designer | 2018 | 1 | |
| McDonough, J.M. | J.M. McDonough | Actor | 1998 | 1 | |
| McDonough, John | John McDonough | Actor | 1967 | 1 | |
| McDonough, Tim | Tim McDonough | Actor, Adaptation, Director, Sound Designer | 1999 - 2009 | 5 | |
| McDormand, Frances | Frances McDormand | Actor | 1990 | 1 | |
| McDougall, Desireé, Kongerød | Desireé Kongerød McDougall | Translator | 2010 | 1 | 1 |
| McDougall, Gordon | Gordon McDougall | Director | 1980 | 1 | 1 |
| McDougall, Gordon | Gordon McDougall | Actor | 1964 | 1 | |
| McDowell, Myles | Myles McDowell | Actor | 1964 | 1 | |
| McDowell, Tina-Lisa | Tina-Lisa McDowell | Actor | 1990 | 1 | |
| McDowell, W. Stuart | W. Stuart McDowell | Director | 2020 | 1 | |
| McEachern, Ann | Ann McEachern | Actor | 1984 | 1 | |
| McEachern, W. E. "Mac" | W. E. "Mac" McEachern | Actor | 2000 | 1 | |
| McEleney, Brian | Brian McEleney | Actor | 1998 | 6 | |
| McElhatton, Michael | Michael McElhatton | Actor | 1988 | 2 | |
| McElherron, Fergal | Fergal McElherron | Actor | 2011 | 1 | 3 |
| McElhinney, Ian | Ian McElhinney | Actor | 1993 | 1 | |
| McElhinney, Mandy | Mandy McElhinney | Actor | 1993 | 1 | 1 |
| McElroy, George | George McElroy | Actor | 1964 | 1 | |
| McElroy, Steve | Steve McElroy | Actor | 2003 | 1 | |
| McElveen, | McElveen | | | | |
| McElveen, Michelle | Michelle McElveen | Choreographer | 2024 | 1 | |
| McEnery, John | John McEnery | Actor | 2010 | 1 | |
| McEnery, Peter | Peter McEnery | Actor | 1994 | 1 | |
| McEntee, Frank | Frank McEntee | Actor, Director | 1921 | 2 | |
| McErlaine, Sheila | Sheila McErlaine | Sound Designer | 1964 | 1 | |
| McErlean, Keith | Keith McErlean | Actor | 2015 | 1 | |
| McEvers, Veda | Veda McEvers | Actor | 1910 | 3 | |
| McEvoy, Ewan | Ewan McEvoy | Actor | 2012 | 1 | |
| McEvoy, Jennifer | Jennifer McEvoy | Actor | 2003 | 2 | |
| McEvoy, Lara | Lara McEvoy | Actor | 2012 | 1 | |
| McEvoy, Lucianne | Lucianne McEvoy | Actor | 2013 | 1 | |
| McEwan, Andy | Andy McEwan | Actor | 1993 | 1 | |
| McEwan, Paul | Paul McEwan | Actor | 2015 | 1 | |
| McEwen, Karys | Karys McEwen | Actor | 2009 | 1 | |
| McFadden, Neil | Neil McFadden | Sound Designer | 1995 | 1 | |
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