| Téroitin, Patrick | Patrick Téroitin | Costume Designer | 1994 | 4 | |
| Trikerioti, Mayou | Mayou Trikerioti | Costume Designer | 2022 | 4 | |
| Toobe, Federico | Federico Toobe | Costume Designer | 2023 | 1 | |
| Tihanyi, Ildikó | Ildikó Tihanyi | Costume Designer | 2022 | 1 | |
| Toser, David | David Toser | Costume Designer | 2019 | 1 | |
| Trudell, Patricia | Patricia Trudell | Costume Designer | 2024 | 1 | |
| Tukan, Beatrix | Beatrix Tukan | Costume Designer | 2019 | 1 | |
| Trajcheska Ristovska, Roze | Roze Trajcheska Ristovska | Costume Designer | 2024 | 1 | |
| Thakur, Naveen Singh | Naveen Singh Thakur | Conductor, Musician | 2016 - 2017 | 4 | |
| Thaulow, Chr. | Chr. Thaulow | Conductor, Musical Director | 1921 | 3 | |
| Tobiasj, E., Semjononvitsj | E. Semjononvitsj Tobiasj | Conductor | 1997 | 1 | |
| Tiboris, Peter | Peter Tiboris | Conductor | 2007 | 1 | |
| Thomas, Michael, Tilson | Michael Tilson Thomas | Conductor | 2013 | 1 | |
| Tennstedt, Klaus | Klaus Tennstedt | Conductor | 1956 | 1 | |
| Tass, Erik | Erik Tass | Conductor | 1956 | 1 | |
| Tango, Egisto | Egisto Tango | Conductor | 1933 | 1 | |
| Trendler, Robert | Robert Trendler | Conductor | 1943 | 1 | |
| Török, Emil | Emil Török | Conductor | 1925 - 1927 | 2 | |
| Török, Rezső | Rezső Török | Conductor | 1930 | 1 | |
| Todorov, Kosta | Kosta Todorov | Conductor | 1923 - 1926 | 2 | |
| Thoroddsen, Emil | Emil Thoroddsen | Conductor | 1928 | 1 | |
| Tselikas, Andreas | Andreas Tselikas | Conductor | 2019 | 1 | |
| Tafjord, Hild Sofie | Hild Sofie Tafjord | Composer, Sound Designer | 2008 | 10 | |
| Tønnesen, Terje | Terje Tønnesen | Composer, Sound Designer | 2012 - 2013 | 138 | |
| Tushar, Ahsan Reza | Ahsan Reza Tushar | Composer, Sound Designer | 2004 | 2 | |
| Tutul, Mosharraf Hossain | Mosharraf Hossain Tutul | Composer, Sound Designer | 1999 - 2004 | 4 | 1 |
| Triantafillou, Brando | Brando Triantafillou | Composer, Sound Designer | 2018 | 2 | |
| Tveitt, Geirr | Geirr Tveitt | Composer, Musician | 1988 - 2013 | 4 | 1 |
| Tsagkaris, Giorgos | Giorgos Tsagkaris | Composer, Musical Director | 1980 - 1985 | 13 | |
| Tarkmann, Andreas N. | Andreas N. Tarkmann | Composer, Musical Director | 1994 - 1996 | 2 | |
| Taliotis, Neofytos | Neofytos Taliotis | Composer, Director | 2004 | 2 | |
| Tomba, Heisnam | Heisnam Tomba | Composer, Designer, Director | 2012 | 3 | |
| Toijanniemi, Tuukka | Tuukka Toijanniemi | Composer, Designer | 2004 | 2 | |
| Tauský, Vilém | Vilém Tauský | Composer, Conductor | 1933 | 2 | |
| Taylor, Richard | Richard Taylor | Composer | 2005 - 2006 | 3 | 1 |
| Theusner, Christoph | Christoph Theusner | Composer | 1990 - 1992 | 2 | |
| Tiefensee, Siegfried | Siegfried Tiefensee | Composer | 1969 | 1 | |
| Tschaikowsky, Pyotr Ilyich | Pyotr Ilyich Tschaikowsky | Composer | 1909 - 2022 | 10 | |
| Tauriņs, Mārtiņs | Mārtiņs Tauriņs | Composer | 2003 | 1 | |
| Taborda, Tato | Tato Taborda | Composer | 2001 - 2002 | 2 | |
| Taddei, Claudio | Claudio Taddei | Composer | 2011 | 1 | |
| Torres, Geraldo | Geraldo Torres | Composer | 1971 - 1973 | 5 | |
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