| Manker, Gustav, | Gustav Manker | Designer, Director | 1948 - 1972 | 11 | |
| MacNaughtan, Alan | Alan MacNaughtan | Actor | 1948 - 1991 | 5 | |
| Messemer, Hans, | Hans Messemer | Actor | 1949 | 1 | |
| Mühlen, Elisabeth, | Elisabeth Mühlen | Actor | 1949 | 2 | |
| Maschmeier, Werner, | Werner Maschmeier | Actor | 1949 | 2 | |
| Maier, Anni, | Anni Maier | Actor | 1949 | 1 | |
| Michaïlidou, Athina | Athina Michaïlidou | Actor | 1949 | 1 | |
| McCartie, Catherine | Catherine McCartie | Actor | 1949 | 1 | |
| Mack, Kathleen | Kathleen Mack | Actor | 1949 | 1 | |
| Moroney, William | William Moroney | Actor | 1949 | 1 | |
| Madaj, Rita | Rita Madaj | Actor | 1949 | 1 | |
| Maranhão, José, Armando | José Armando Maranhão | Director | 1949 | 1 | |
| Mélan-Gúéroult, - | - Mélan-Gúéroult | Composer | 1949 | 1 | |
| Magalhães, Aloísio | Aloísio Magalhães | Costume Designer, Designer | 1949 | 2 | |
| Muri, Nadine | Nadine Muri | Actor | 1949 | 1 | |
| Marre, Albert | Albert Marre | Actor, Director | 1949 - 1950 | 4 | |
| Morgan, Miles | Miles Morgan | Actor, Lighting Designer | 1949 - 1950 | 3 | |
| Mottoni, Erich, | Erich von Mottoni (Erich Mottoni) | Actor | 1949 - 1952 | 3 | |
| Merkouri, Melina | Melina Merkouri | Actor | 1949 - 1955 | 3 | |
| Morelli, Richard | Richard Morelli | Director | 1949 - 1959 | 3 | |
| Montelius, Olle | Olle Montelius | Costume Designer, Designer | 1949 - 1963 | 5 | |
| Maximowna, Ita, | Ita Maximowna | Costume Designer, Designer | 1949 - 1964 | 10 | |
| Musser, Tharon | Tharon M. Musser | Lighting Designer | 1949 - 1965 | 4 | |
| Moos, Trude, | Trude Moos | Actor | 1950 | 1 | |
| Makri, Spiro, | Spiro Makri | Actor | 1950 | 1 | |
| Michutta, Emil, | Emil Michutta | Actor | 1950 | 1 | |
| Matter, Ernst Ludwig, | Ernst Ludwig Matter | Actor | 1950 | 1 | |
| Miter, Delores | Delores Miter | Actor | 1950 | 1 | |
| Montealegre, Felicia | Felicia Montealegre | Actor | 1950 | 1 | |
| Mitchell, Ronald | Ronald Mitchell | Director | 1950 | 1 | |
| Moore, Ellen | Ellen Moore | Actor | 1950 | 1 | |
| Mandelker, Leah | Leah Mandelker | Actor | 1950 | 1 | |
| McNeely, Jerry | Jerry McNeely | Actor | 1950 | 1 | |
| McKeowen, Elizabeth | Elizabeth McKeowen | Actor | 1950 | 1 | |
| Morrow, Jeff | Jeff Morrow | Actor | 1950 | 1 | |
| Mano, Seiji | Seiji Mano | Costume Designer | 1950 | 1 | |
| Mishima, Masao | Masao Mishima | Actor | 1950 | 1 | |
| Minami, Yoshie | Yoshie Minami | Actor | 1950 | 1 | |
| Møller, Jytte | Jytte Møller | Actor | 1950 | 1 | |
| Majumdar, Sheuli | Sheuli Majumdar | Translator | 1950 | 1 | |
| Marini, Isa | Isa Marini | Actor | 1950 | 1 | |
| March, Fredric | Fredric March | Actor | 1950 | 1 | |
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