| Tepper, Allie | Allie Tepper | Designer | 2000 | 1 | |
| Taylor, Fanny | Fanny Taylor | Designer | 1948 | 1 | |
| Tabački, Miodrag | Miodrag Tabački | Designer | 1984 - 2000 | 2 | |
| Tor, Behlüldane | Behlüldane Tor (Behluldane Tor) | Designer | 2014 | 1 | |
| Tenkei, Tibor | Tibor Tenkei | Designer | 2017 - 2019 | 9 | |
| Traun, Selina | Selina Traun | Designer | 2018 | 1 | |
| Turturică, Vladimir | Vladimir Turturică | Designer | 2017 - 2019 | 7 | |
| Turtur, Valentina | Valentina Turtur | Designer | 2018 | 20 | |
| Topornjina, Aleksandra | Aleksandra Topornjina | Designer | 1941 - 1944 | 2 | |
| Toneva, Ralica | Ralica Toneva | Designer | 2016 | 1 | |
| Tirole, Christian | Christian Tirole | Designer | 2019 - 2020 | 15 | |
| Tzoka, Tina | Tina Tzoka | Designer | 2020 | 1 | |
| Tester, Ted | Ted Tester | Designer | 1975 | 1 | |
| Tomov, Rumen | Rumen Tomov | Designer, Director | 1983 - 1994 | 3 | |
| Truffer, Alex | Alex Truffer | Designer, Director | 2009 | 2 | |
| Troller, Urs | Urs Troller | Designer, Director | 2010 | 2 | |
| Tomtsini, Sokol | Sokol Tomtsini | Designer, Lighting Designer | 2001 - 2007 | 6 | |
| Thornton, Jonne | Jonne Thornton | Designer, Lighting Designer | 1970 | 2 | |
| Taylor, James | James Taylor | Designer, Lighting Designer | 1993 | 2 | |
| Tilton, James | James Tilton | Designer, Lighting Designer | 1965 - 1967 | 5 | |
| Thomas, Hugh | Hugh Thomas | Designer, Lighting Designer | 1963 | 2 | |
| Tasker, John | John Tasker | Designer, Producer | 1961 | 2 | |
| Tamura, Isao | Isao Tamura | Designer, Sound Designer | 1968 - 1990 | 7 | |
| Thacker, David | David Thacker | Director | 1986 - 2015 | 10 | |
| Teale, Polly | Polly Teale | Director | 2000 | 8 | |
| Theobald, Edward | Edward Theobald | Director | 1972 | 1 | |
| Thorwald, Achim | Achim Thorwald | Director | 1975 - 1977 | 2 | |
| Tidmarsh, Andrew | Andrew Tidmarsh | Director | 2002 - 2003 | 2 | |
| Tietze, Herbert | Herbert Tietze | Director | 1957 | 1 | |
| Tourneur, Maurice | Maurice Tourneur | Director | 1918 | 1 | |
| Trailovic, Mira | Mira Trailovic | Director | 1975 | 1 | |
| Tsonos, Robert | Robert Tsonos | Director | 2004 | 1 | |
| Tsumak, Andrei | Andrei Tsumak | Director | 2006 | 1 | |
| Tychowa, Lucyna | Lucyna Tychowa | Director | 1989 | 1 | |
| Tywonek, Marta | Marta Tywonek | Director | 1957 | 1 | |
| Trumbull, Eric | Eric Trumbull | Director | 2006 | 1 | |
| Trautmann, L | Lothar Trautmann (L Trautmann) | Director | 1977 - 1994 | 2 | |
| Tymukas, Julia | Julia Tymukas | Director | 1984 | 1 | |
| Treutler, Ludwig, | Ludwig Treutler | Director | 1893 | 1 | |
| Tittert, Siegfried, | Siegfried Tittert | Director | 1948 | 1 | |
| Todorović, Sava, | Sava Todorović | Director | 1904 | 1 | |
| Tuzitsch, Sergijan, | Sergijan Tuzitsch | Director | 1904 - 1905 | 2 | |
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