| Mackay, Gerry | Gerry Mackay | Actor | 2015 | 1 | |
| McFarlane, Caitlin | Caitlin McFarlane | Actor | 2015 | 1 | |
| Martin, Hugo | Hugo Martin | Actor | 1913 | 1 | |
| Mouillesseaux, Stephen | Stephen Mouillesseaux | Actor | 2017 | 1 | |
| Mena, Francisco | Francisco Mena | Actor | 2017 | 1 | |
| Monroe, Joe | Joe Monroe | Actor | 2017 | 1 | |
| Mihilewicz, Matt | Matt Mihilewicz | Actor | 2017 | 1 | |
| Martin, Frk. | Frk. Martin | Actor | 1881 | 1 | |
| Martini, Sig.ra | Sig.ra Martini | Actor | 1940 | 3 | |
| Maltese, C. | C. Maltese | Actor | 1940 | 3 | |
| Moscardi, N. | N. Moscardi | Actor | 1940 | 3 | |
| Miftahelkehir, Abdesamade | Abdesamade Miftahelkehir | Actor | 2002 | 14 | |
| Meyer, Jonelle | Jonelle Meyer | Actor | 2018 | 1 | |
| Maldonado, Alyssa | Alyssa Maldonado | Actor | 2018 | 1 | |
| McGeehan, Dan | Dan McGeehan | Actor | 2018 | 1 | |
| Mohanty, Priya | Priya Mohanty | Actor | 2018 | 1 | |
| MacMath, Danielle | Danielle MacMath | Actor | 2018 - 2023 | 2 | |
| Martin, Mare | Mare Martin | Actor | 1984 | 1 | |
| Modzelewski, Krystian | Krystian Modzelewski | Actor | 2017 - 2021 | 2 | |
| Małecka-Tepicht, Natalia | Natalia Małecka-Tepicht | Actor | 2017 | 1 | |
| McMorrough, Jeff | Jeff McMorrough | Actor | 2018 | 1 | |
| Marks, Dana | Dana Marks | Actor | 2018 | 1 | |
| Macomber, Mystique | Mystique Macomber | Actor | 2018 | 1 | |
| Mitchell, Derek | Derek Mitchell | Actor | 2018 | 1 | |
| Murphy, Georgie | Georgie Murphy | Actor | 2018 | 1 | |
| Myers, Zachary | Zachary Myers | Actor | 2018 | 1 | |
| Massey, Guy | Guy Massey | Actor | 2018 | 1 | |
| McCarter, Janet | Janet McCarter | Actor | 2018 | 1 | |
| Manning, Emma Ogden | Emma Ogden Manning | Actor | 1906 | 1 | |
| Magie, Lizzie | Lizzie Magie | Actor | 1905 | 1 | |
| Martini, Rita | Rita Martini | Actor | 1909 | 1 | |
| Mraschner, Hanns | Hanns Mraschner | Actor | 1909 | 1 | |
| McGill, Lindsey | Lindsey McGill | Actor | 2018 | 1 | |
| McGuire, Sean | Sean McGuire | Actor | 2018 | 1 | |
| Montes, Edward | Edward Montes | Actor | 2018 | 1 | |
| Muroya, Kimie | Kimie Muroya | Actor | 2018 | 1 | |
| Mitchell, - | - Mitchell | Actor | 1916 | 1 | |
| Mintz, Katie | Katie Mintz | Actor | 2018 | 1 | |
| Mercury, Alexander | Alexander Mercury | Actor | 2018 | 2 | |
| Milham, Victoria | Victoria Milham | Actor | 2018 | 2 | |
| Moser, Gerhard | Gerhard Moser | Actor | 2018 | 2 | |
| Marten, Hanna, von | Hanna von Marten | Actor | 1905 | 1 | |
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