| Terni, Paolo | Paolo Terni | Composer | 1990 – 1996 | 5 | |
| Tanner, Jill | Jill Tanner | Actor | 1990 – 1997 | 2 | |
| Threlfall, David, | David Threlfall | Actor | 1990 – 1999 | 5 | |
| Thelemann, Susanne | Susanne Thelemann | Dramaturg | 1990 – 2009 | 6 | |
| Tahir, Taimor | Taimor Tahir | Translator | 1990 – 2016 | 7 | |
| Tandberg, Ole Anders, | Ole Anders Tandberg | Director | 1990 – 2020 | 49 | |
| Tarkenter, Moira | Moira Tarkenter | Actor | 1991 | 1 | |
| Telfer, Lisa | Lisa Telfer | Actor | 1991 | 1 | |
| Thompson, Mark | Mark Thompson | Designer | 1991 | 1 | |
| Thomsen, Ebba Houmøller | Ebba Houmøller Thomsen | Actor | 1991 | 1 | |
| Torosjan, Anahit | Anahit Torosjan | Actor | 1991 | 2 | |
| Thomas, Heidi | Heidi Thomas | Adaptation | 1991 | 2 | |
| Tati, Antonieta | Antonieta Tati | Actor | 1991 | 1 | |
| Thuot, Yvette | Yvette Thuot | Actor | 1991 | 2 | |
| Trauttmansdorff, Katharina | Katharina Trauttmansdorff | Actor | 1991 | 1 | |
| Trinker, Heike | Heike Trinker | Actor | 1991 | 4 | |
| Tobias, Oliver | Oliver Tobias | Director | 1991 | 3 | |
| Tountopoulou, Adriani | Adriani Tountopoulou | Actor | 1991 | 1 | |
| Taraszkiewicz, Tomasz | Tomasz Taraszkiewicz | Actor | 1991 | 2 | |
| Troch, Rafaël | Rafaël Troch | Actor | 1991 | 1 | |
| Tschernek, Alexander | Alexander Tschernek | Actor | 1991 | 1 | |
| Trybała, Marzena | Marzena Trybała | Actor | 1991 | 2 | |
| Takada, Mugiko | Mugiko Takada | Actor | 1991 | 1 | |
| Tiller, Stephen | Stephen Tiller | Director | 1991 | 1 | |
| Thompson, Bill | Bill Thompson | Composer | 1991 | 1 | |
| Thomson, Kim | Kim Thomson | Actor | 1991 | 1 | |
| Thiessen, Anke | Anke Thiessen | Director | 1991 | 1 | |
| Thornton, Jake | Jake Thornton | Actor | 1991 | 1 | |
| Trenkle, Tom | Tom Trenkle | Actor | 1991 | 1 | |
| Takao, Masumi | Masumi Takao | Director | 1991 | 1 | |
| Tanii, Yoshio | Yoshio Tanii | Actor | 1991 | 1 | |
| Tielsch, Gudrun | Gudrun Tielsch | Actor | 1991 | 1 | |
| Tyrén, Ingemar | Ingemar Tyrén | Lighting Designer | 1991 | 21 | |
| Toussaint, René | René Toussaint | Actor | 1991 | 1 | |
| Tarkenter, David | David Tarkenter | Actor | 1991 – 1992 | 2 | |
| Tzatsos, Thanasis | Thanasis Tzatsos | Designer | 1991 – 1992 | 1 | |
| Tzimopoulos, Sotiris | Sotiris Tzimopoulos | Actor | 1991 – 1992 | 4 | |
| Tsokli, Magia | Magia Tsokli | Costume Designer | 1991 – 1992 | 1 | |
| Takahashi, Iwane | Iwane Takahashi | Sound Designer | 1991 – 1997 | 6 | |
| Tóth, József | József Tóth | Actor | 1991 – 2001 | 8 | |
| Tienhooven, Theo | Theo Tienhooven | Costume Designer, Designer | 1991 – 2009 | 90 | |
| Thompson, Judith | Judith Thompson | Adaptation, Director | 1991 – 2013 | 8 | |
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