| Teodosiu, Valentin | Valentin Teodosiu | Actor | 1977 | 1 | |
| Tuţă, Cristian | Cristian Tuţă | Actor | 1977 | 3 | |
| Thamin, Jean-Louis | Jean-Louis Thamin | Director | 1977 | 1 | |
| Torido, Roberto | Roberto Torido | Actor | 1977 | 1 | |
| Toner, Thomas | Thomas Toner | Actor | 1977 | 2 | |
| Tschiprijanov, Nikola | Nikola Tschiprijanov | Actor | 1977 | 1 | |
| Taylor, Howard | Howard Taylor | Actor | 1977 | 1 | |
| Tanner, Leon | Leon Tanner | Actor | 1977 | 1 | |
| Tsagkas, Christos | Christos Tsagkas | Actor, Composer, Director, Dramaturg | 1977 – 1981 | 24 | |
| Tsagkas, Lampros | Lampros Tsagkas | Actor | 1977 – 1981 | 12 | |
| Tuerk, Laurence | Laurence Tuerk | Lighting Designer, Sound Designer | 1977 – 1984 | 3 | |
| Thomenius, Maija-Liisa | Maija-Liisa Thomenius | Costume Designer | 1977 – 1987 | 3 | |
| Tunççekiç, Ersen | Ersen Tunççekiç (Ersen Tunccekic) | Lighting Designer | 1977 – 2008 | 2 | |
| Tsuji, Kazuko | Kazuko Tsuji | Actor | 1978 | 2 | |
| Töth , Eduard | Eduard Töth | Actor | 1978 | 1 | |
| Tuomas-Kettunen , Veli | Veli Tuomas-Kettunen | Actor | 1978 | 1 | |
| Thuresson, Anders | Anders Thuresson | Translator | 1978 | 1 | |
| Troobnick, Eugene | Eugene Troobnick | Actor | 1978 | 1 | |
| Tivodaru, Ştefan | Ştefan Tivodaru | Actor | 1978 | 1 | |
| Tillotson, Ray | Ray Tillotson | Actor | 1978 | 1 | |
| Tool, Külliki | Külliki Tool | Actor | 1978 | 1 | |
| Tynsley, Dennis | Dennis Tynsley | Actor | 1978 | 1 | |
| Takida, Yusuke | Yusuke Takida | Actor | 1978 | 1 | |
| Taylor, Leo | Leo Taylor | Actor | 1978 | 3 | |
| Taniguchi, Kaori | Kaori Taniguchi | Actor | 1978 | 1 | |
| Toccafondi, Bianca | Bianca Toccafondi | Actor | 1978 | 2 | |
| Taddei, Marta | Marta Taddei | Actor | 1978 | 2 | |
| Tschetter, Jane | Jane Tschetter | Costume Designer | 1978 | 1 | |
| Taylor, Douglas | Douglas Taylor | Lighting Designer | 1978 | 1 | |
| Taylor, Juliet | Juliet Taylor | Actor | 1978 | 1 | |
| Tewes, Alfred | Alfred Tewes | Actor | 1978 | 1 | |
| Trooger, Sabina | Sabina Trooger | Actor | 1978 | 1 | |
| Toney, Brian | Brian Toney | Actor | 1978 | 1 | |
| Tammeleht, Lisbeht | Lisbeht Tammeleht | Actor | 1978 | 1 | |
| Theys, Arla | Arla Theys | Actor | 1978 | 1 | |
| Tapavički, Feđa | Feđa Tapavički | Actor | 1978 | 1 | |
| Turbová, Sylva | Sylva Turbová | Actor | 1978 – 1980 | 1 | |
| Tvrzníková, Jaroslava | Jaroslava Tvrzníková | Actor | 1978 – 1980 | 1 | |
| Tank, Marie Louise, | Marie Louise Tank | Actor | 1978 – 1987 | 6 | |
| Tarant , Michael | Michael Tarant | Actor, Director | 1978 – 2013 | 3 | |
| Taraschi, Rosario | Rosario Taraschi | Actor | 1979 | 1 | |
| ten Bruggencate, Catherine | Catherine ten Bruggencate | Actor | 1979 | 3 | |
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