| Mallett, Chris | Chris Mallett (Chris Mallett) | Actor | 1984 | 1 | |
| Malmberg, Li | Li Malmberg (Li Malmberg) | Actor | 1985 | 1 | |
| Malmström, Ulla | Ulla Malmström (Ulla Malmström) | Actor | 1956 | 1 | |
| Malone, Sylvia | Sylvia Malone (Sylvia Malone) | Actor | 2004 | 1 | |
| Maloy, Richard | Richard Maloy (Richard Maloy) | Actor | 2002 | 1 | |
| Malsbender, Herbert | Herbert Malsbender (Herbert Malsbender) | Actor | 1950 - 1963 | 2 | |
| Managuerra, Mercè | Mercè Managuerra (Mercè Managuerra) | Actor | 1997 | 1 | |
| Manasiev, Plamen | Plamen Manasiev (Пламен Манасиев) | Actor | 2001 - 2022 | 2 | |
| Mann, Aaron | Aaron Mann (Aaron Mann) | Actor | 2008 | 1 | |
| Mannheimer, Bodil | Bodil Mannheimer (Bodil Mannheimer) | Actor | 1968 | 2 | |
| Manoukian, Alina | Alina Manoukian (Alina Manoukian) | Actor | 2004 | 1 | |
| Mantius, Karlheinz | Karlheinz Mantius (Karlheinz Mantius) | Actor | 1964 - 1973 | 2 | |
| Marcello-Chraszczewska, Helena | Helena Marcello-Chraszczewska (Helena Marcello-Chraszczewska) | Actor | 1882 | 1 | |
| Marchant, Valérie | Valérie Marchant (Valérie Marchant) | Actor | 2002 | 1 | |
| Marchioni, Vinicio | Vinicio Marchioni (Vinicio Marchioni) | Actor | 2002 - 2005 | 16 | |
| Margulies, Pär | Pär Margulies (Pär Margulies) | Actor | 1985 - 1990 | 3 | |
| Maria, Lucia | Lucia Maria (Lucia Maria) | Actor | 2007 - 2008 | 6 | 1 |
| Marin, Hans | Hans Marin (Hans Marin) | Actor | 1973 - 1988 | 2 | |
| Markham, Petra | Petra Markham (Petra Markham) | Actor | 2004 - 2016 | 8 | |
| Markkanen, Soili | Soili Markkanen (Soili Markkanen) | Actor | 1967 - 2012 | 4 | |
| Marko-Nord, Julia | Julia Marko-Nord (Julia Marko-Nord) | Actor | 2007 | 1 | |
| Marlatt, Richard | Richard Marlatt (Richard Marlatt) | Actor | 1999 | 1 | |
| Marlowe, Dorine | Dorine Marlowe (Dorine Marlowe) | Actor | 1934 | 1 | |
| Marner, Carmela | Carmela Marner (Carmela Marner) | Actor | 2006 | 1 | |
| Maron, Hanna | Hanna Maron (Hanna Maron) | Actor | 1959 - 1966 | 2 | |
| Marquard-Olsen, Urania | Urania Marquard-Olsen (Urania Marquard-Olsen) | Actor | 1883 - 1924 | 58 | 1 |
| Marr, Stacy | Stacy Marr (Stacy Marr) | Actor | 2001 | 1 | |
| Martin, Adam | Adam Martin (Adam Martin) | Actor | 1975 | 1 | |
| Martynowicz, Henryk | Henryk Martynowicz (Henryk Martynowicz) | Actor | 1907 - 1913 | 5 | |
| Marx, Paul | Paul Marx (Paul Marx) | Actor | 1905 - 1933 | 20 | |
| März, Daniela | Daniela März (Daniela März) | Actor | 2001 - 2002 | 4 | |
| Marzi, Davide | Davide Marzi (Davide Marzi) | Actor | 1999 - 2000 | 4 | |
| Mascus, Hella-Birgit | Hella-Birgit Mascus (Hella-Birgit Mascus) | Actor | 1989 - 1990 | 2 | |
| Maskell, Robert | Robert Maskell (Robert Maskell) | Actor | 2002 | 1 | |
| Mason, Dan | Dan Mason (Dan Mason) | Actor | 1996 - 2013 | 3 | |
| Mason, Marsha | Marsha Mason (Marsha Mason) | Actor | 1973 | 1 | |
| Massey, Hart | Hart Massey (Hart Massey) | Actor | 2000 | 1 | |
| Masteller, Kerry | Kerry Masteller (Kerry Masteller) | Actor | 2000 | 1 | |
| Małynicz, Zofia | Zofia Małynicz (Zofia Małynicz) | Actor | 1958 | 1 | |
| Mathew, Gisela | Gisela Mathew (Gisela Mathew) | Actor | 1945 | 1 | |
| Matikainen, Osmo | Osmo Matikainen (Osmo Matikainen) | Actor | 1983 - 2006 | 2 | |
| Matiki, Mafumu | Mafumu Matiki (Mafumu Matiki) | Actor | 2006 | 23 | |
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