| Trionfo, Aldo | Aldo Trionfo | Adaptation, Director | 1968 - 1973 | 10 | |
| Tosco, Giuseppe | Giuseppe Tosco | Actor | 1972 - 1973 | 4 | |
| Toncinich, Claudio | Claudio Toncinich | Actor | 1972 - 1973 | 4 | |
| Touw, Pleuni | Pleuni Touw | Actor | 1972 | 1 | |
| Tovote, Jochen | Jochen Tovote | Actor | 1972 - 1998 | 7 | |
| Tzogias, Nikos | Nikos Tzogias | Actor | 1957 - 1990 | 4 | |
| Tsatsouli, Kleio | Kleio Tsatsouli | | | | |
| Tsatsouli, Kleio | Kleio Tsatsouli | Musical Director | 1972 - 1990 | 3 | |
| Torner, Gustavo | Gustavo Torner | Designer | 1982 - 1983 | 3 | |
| Tundidor, Ricardo | Ricardo Tundidor | Actor | 1983 | 1 | |
| Tipton, Jennifer | Jennifer Tipton | Lighting Designer | 1983 - 2009 | 7 | |
| Turnquist, Holly | Holly Turnquist | Actor | 1972 | 3 | |
| Tollefson, Dave | Dave Tollefson | Actor | 1972 | 2 | |
| Tichá, Jaroslava | Jaroslava Tichá | Actor | 1972 - 1994 | 6 | |
| Tlalka, Lubomír | Lubomír Tlalka | Actor | 1972 - 1985 | 2 | |
| Tichy, Alexandra | Alexandra Tichy | Actor | 1983 - 1989 | 6 | |
| Thomamüller, Erasmus | Erasmus Thomamüller | Actor | 1905 - 1911 | 3 | |
| Tilly, François-Louis | François-Louis Tilly | Actor | 1972 | 5 | |
| Tarrant, Newell | Newell Tarrant | Director, Producer | 1936 - 1937 | 4 | |
| Terramare, Georg | Georg Terramare | Director | 1937 | 1 | |
| Terrelová, Erna | Erna Terrelová | Actor | 1937 | 1 | |
| Tovborg, Søren | Søren Tovborg | Designer | 1983 | 1 | |
| Taasti, Anker | Anker Taasti | Actor | 1983 - 1990 | 3 | |
| Tamara, Garina | Garina Tamara | Choreographer | 1945 | 1 | |
| Thomas, Alfred | Alfred Thomas | Actor | 1953 | 1 | |
| Thomasberger, Erika | Erika Thomasberger | Costume Designer, Designer | 1953 - 1962 | 5 | |
| Tschaprasov, Andrej | Andrej Tschaprasov | Actor | 1956 - 1980 | 3 | |
| Tontscheva, Penka | Penka Tontscheva | Actor | 1956 | 1 | |
| Tihova, Kina | Kina Tihova | Actor | 1956 - 1980 | 2 | |
| Tschunko, Maxi | Maxi Tschunko | Costume Designer, Designer | 1959 - 1967 | 6 | |
| Tiefenbacher, Franz | Franz Tiefenbacher | Actor | 1959 | 1 | |
| Triebner, Arthur | Arthur Triebner | Actor | 1905 | 1 | |
| Tsapelis, Zoras | Zoras Tsapelis | Actor | 1945 - 1990 | 11 | |
| Thanopoulou, E. | E. Thanopoulou | Actor | 1964 | 1 | |
| Topouzis, I. | I. Topouzis | Actor | 1964 | 1 | |
| Torres, Luis | Luis Torres | Actor | 1970 | 1 | |
| Torres, Santos | Santos Torres | Lighting Designer | 1976 | 1 | |
| Tanimanidi, El. | El. Tanimanidi | Director | 1980 | 1 | |
| Trapero, Verónica | Verónica Trapero | Actor | 1980 | 1 | |
| Tsagkaris, Giorgos | Giorgos Tsagkaris | Composer, Musical Director | 1980 - 1985 | 13 | |
| Tsekou, Tzeni | Tzeni Tsekou | Actor | 1980 - 1981 | 3 | |
| Toelle, Tom | Tom Toelle | Director | 1982 - 1986 | 2 | |
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