| Mauksch, Irmgard | Irmgard Mauksch | Actor | 1956 | 1 | |
| Mogyorossi, Győző | Győző Mogyorossi | Actor | 1956 | 1 | |
| Moreno, Ricardo | Ricardo Moreno | Designer, Lighting Designer | 1956 | 2 | 1 |
| Marinkovic, Rados | Rados Marinkovic | Costume Designer | 1956 | 1 | 1 |
| Molina, Los Gemelos | Los Gemelos Molina | Actor | 1956 | 1 | |
| Mora, Juan | Juan Mora | Actor | 1956 | 1 | |
| Mortensen, Willy | Willy Mortensen | Actor | 1956 | 1 | |
| Makkonen, Aino | Aino Makkonen | Costume Designer | 1956 | 1 | |
| Meyer-Bruhns, Luise | Luise Meyer-Bruhns | Actor | 1956 | 1 | |
| Mewes, Ingund | Ingund Mewes | Actor | 1956 | 1 | |
| Müller, Hanns | Hanns Müller | Actor | 1956 | 2 | |
| Moruzan, Dem. | Dem. Moruzan | Actor | 1956 | 1 | |
| Meierhofer, Felix | Felix Meierhofer | Actor | 1956 | 2 | |
| Moralı, Mahmut | Mahmut Moralı | Actor | 1956 | 1 | |
| Mogol, Salâhattin | Salâhattin Mogol | Actor | 1956 | 1 | |
| Meinecke, Monika | Monika Meinecke | Dancer | 1956 | 1 | |
| MacPhee, Charles | Charles MacPhee | Actor | 1956 | 1 | |
| Moss, Eugene | Eugene Moss | Actor | 1956 | 2 | |
| Munroe, Walter | Walter Munroe | Actor | 1956 | 2 | |
| Moruzan, Constantin | Constantin Moruzan | Adaptation, Director | 1956 | 2 | |
| Massal'skij, Pavel | Pavel Massal'skij | Director | 1956 | 1 | |
| Maksimova, Raisa | Raisa Maksimova | Actor | 1956 | 1 | |
| McCallum, John | John McCallum | Actor | 1956 | 1 | |
| Maresti, Carlo | Carlo Maresti | Actor | 1956 | 1 | |
| Menichetti, Anna | Anna Menichetti | Actor | 1956 | 1 | |
| Masson, Gust | Gust Masson | Mask Maker | 1956 - 1957 | 3 | |
| Markey, Jolande | Jolande Markey | Actor | 1956 - 1957 | 6 | |
| Maeremans, G. | G. Maeremans | Actor | 1956 - 1957 | 3 | |
| Mertens, J. | J. Mertens | Actor | 1956 - 1957 | 3 | |
| Munro, Nan | Nan Munro | Actor | 1956 - 1957 | 2 | |
| Micheel, Gerd | Gerd Micheel | Actor | 1956 - 1958 | 2 | |
| Mellies, Wolfgang | Wolfgang Mellies | Actor | 1956 - 1958 | 2 | |
| Mellies, Eberhard | Eberhard Mellies | Director | 1956 - 1958 | 2 | |
| Mauss, Brigitte | Brigitte Mauss | Costume Designer | 1956 - 1958 | 2 | |
| Montemurri, Davide | Davide Montemurri | Actor | 1956 - 1961 | 2 | |
| Masserano Taricco, Pietro | Pietro Masserano Taricco | Director | 1956 - 1962 | 2 | |
| Marcel, Robert | Robert Marcel | Actor | 1956 - 1972 | 5 | |
| Müller, Christa | Christa Müller | Actor, Costume Designer, Dramaturg | 1956 - 1980 | 3 | |
| Mihăilescu, Ion | Ion Mihăilescu | Director | 1956 - 1980 | 2 | |
| Matz, Katharina | Katharina Matz | Actor | 1956 - 1985 | 3 | |
| Müller, Ursula | Ursula Müller | Costume Designer, Dancer, Designer | 1956 - 1995 | 3 | |
| McQueen, Vincent | Vincent McQueen | Actor | 1956 - 1999 | 2 | |
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