| Tarlow, Dimitris | Dimitris Tarlow | Director | 2018 | 1 | |
| Tanner, Tony | Tony Tanner | Director | 2018 | 1 | |
| Tajudin, Yudi Ahmad | Yudi Ahmad Tajudin | Director | 2019 | 1 | |
| Torbica, Igor, Vuk | Igor Vuk Torbica | Director | 2019 | 1 | |
| Trenčovski, Goran | Goran Trenčovski | Director | 2017 | 1 | |
| Tsakiridi, Ria | Ria Tsakiridi | Director | 2019 | 1 | |
| Torre, Carina | Carina Torre | Director | 2016 | 1 | |
| Taneev, S.A. | S.A. Taneev | Director | 1940 | 1 | |
| Tarchanov, Ivan, Mihailovič | Ivan Mihailovič Tarchanov | Director | 1960 | 1 | |
| Tumanov, Iosif | Iosif Tumanov | Director | | 1 | |
| Tømta, Hanne | Hanne Tømta | Director | 2020 | 1 | 3 |
| Taccardo, Paolo | Paolo Taccardo | Director | 2015 - 2017 | 5 | |
| Tamura, Isao | Isao Tamura | Designer, Sound Designer | 1968 - 1990 | 7 | |
| Tasker, John | John Tasker | Designer, Producer | 1961 | 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 | |
| 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 | |
| Taylor, David | David Taylor | Designer | 1999 | 1 | |
| Thelander, Lesley | Lesley Thelander | Designer | 1982 | 1 | |
| Thompson, Mark | Mark Thompson | Designer | 1991 | 1 | |
| Tietjens, Michael | Michael Tietjens | Designer | 1983 | 1 | |
| Tindberg, Snorre, | Snorre Tindberg | Designer | 1968 - 1990 | 11 | |
| Tośta, Antoni | Antoni Tośta | Designer | 1965 | 1 | |
| Topolski, Zdzisław | Zdzisław Topolski | Designer | 1960 | 1 | |
| Treplin, Agnes | Agnes Treplin | Designer | 2002 | 1 | |
| Tvardovskaja, O. | O. Tvardovskaja | Designer | 1999 - 2000 | 2 | |
| Treutler, Malgorzata | Malgorzata Treutler | Designer | 1973 - 1989 | 2 | |
| Trad, L. | L. Trad | Designer | 1946 | 1 | |
| Tarasova, E. | E. Tarasova | Designer | 1964 | 1 | |
| Tröster, F. | F. Tröster | Designer | 1943 - 1944 | 2 | |
| Tripp, Tony | Tony Tripp | Designer | 1982 - 2002 | 3 | |
| Traversa, Andrea | Andrea Traversa | Designer | 2011 | 1 | |
| Turrell, Leanne | Leanne Turrell | Designer | 2011 | 1 | |
| Thatcher, Emma | Emma Thatcher | Designer | 2010 - 2011 | 2 | |
| Täuber, Harry, | Harry Täuber | Designer | 1925 | 1 | |
| Tetmajer, Włodzimierz, | Włodzimierz Tetmajer | Designer | 1907 | 1 | |
| Thorstensen, Lise, | Lise Thorstensen | Designer | 2007 | 1 | |
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