| Massaro, Joe | Joe Massaro | Actor | 1982 | 1 | |
| Massaro, Mitch | Mitch Massaro | Lighting Designer | 2004 | 1 | |
| Maßberg, Hermann | Hermann Maßberg | Actor | 1901 | 1 | |
| Maßel, Helmut | Helmut Maßel | Actor, Director | 1974 - 1992 | 3 | |
| Massen, Louis | Louis Massen | Actor | 1904 | 1 | 1 |
| Massenet, Jules | Jules Massenet | Composer | 1900 - 1917 | 4 | |
| Massera, Jarmila | Jarmila Massera | Designer | 1971 | 1 | |
| Masserano Taricco, Pietro | Pietro Masserano Taricco | Director | 1956 - 1962 | 2 | |
| Masset, Nicolas | Nicolas Masset | Lighting Designer | 2019 | 1 | |
| Masset, Valerie | Valerie Masset | Actor | 1966 | 1 | |
| Massey, Anna | Anna Massey | Actor | 1970 - 1973 | 2 | 1 |
| Massey, Daniel | Daniel Massey | Actor | 1977 | 1 | 1 |
| Massey, Guy | Guy Massey | Actor | 2018 | 1 | |
| Massey, Hart | Hart Massey | Actor | 2000 | 1 | 1 |
| Massie, Paul | Paul Massie | Actor | 1966 - 1978 | 2 | |
| Massie, Ryan | Ryan Massie | Actor | 2009 | 1 | |
| Massim, Nicolae | Nicolae Massim | Director | 1945 | 1 | |
| Massin, - | - Massin | Actor | 1906 | 2 | |
| Massingham, Andy | Andy Massingham | Actor | 2009 | 1 | 1 |
| Massingham, Dorothy | Dorothy Massingham | Actor | 1918 | 1 | |
| Massini, Fabrizio | Fabrizio Massini | Producer | 2014 - 2019 | 9 | |
| Massip, María | María Massip | Actor | 1966 | 1 | |
| Massman, Denise | Denise Massman | Costume Designer | | 1 | |
| Masso, José Luis | José Luis Masso | Director | 2015 | 1 | |
| Masson, Babette | Babette Masson | Actor | 1999 | 10 | |
| Masson, Daniel | Daniel Masson | Actor | 2005 | 5 | |
| Masson, Ernst | Ernst Masson | Designer | 1973 | 1 | |
| Masson, Gust | Gust Masson | Mask Maker | 1956 - 1957 | 3 | |
| Masson, Hélène | Hélène Masson | Dancer | 1937 | 1 | |
| Masson, John | John Masson | Director | 1992 | 2 | |
| Masson, Louis | Louis Masson | Conductor | 1933 | 1 | |
| Masson, Simon | Simon Masson | Sound Designer | 2023 - 2025 | 40 | |
| Masson, William C. | William C. Masson | Actor | 1926 - 1927 | 6 | |
| Massotti, Cátia | Cátia Massotti | Actor | 2006 | 1 | |
| Massou, Khalid | Khalid Massou | Actor | 2008 | 6 | |
| Maßun, Monika | Monika Maßun | Actor | 1995 | 2 | |
| Massute, Hendrik | Hendrik Massute | Actor | 2000 | 1 | 1 |
| Mast, Holden | Holden Mast | Actor | 2022 | 1 | |
| Mastalerz, Andrzej | Andrzej Mastalerz | Actor | 1998 - 2017 | 2 | |
| Mastalski, Zenon | Zenon Mastalski | Actor | 1907 - 1912 | 4 | |
| Masteller, Kerry | Kerry Masteller | Actor | 2000 | 1 | |
| Masters, Andrea | Andrea Masters | Actor | 1984 | 1 | |
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