| 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 | 1 |
| Teale, Polly | Polly Teale | Director | 2000 | 8 | 1 |
| 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 | 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 | 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 | |
| Tandberg, Ole Anders | Ole Anders Tandberg | Director | 1990 - 2021 | 60 | 1 |
| Tindberg, Ivar | Ivar Tindberg | Director | 2009 | 1 | 1 |
| Thorp, Kristine | Kristine Thorp | Director | 2010 | 1 | |
| Thomas, Jevon Brandon | Jevon Brandon Thomas | Director | 1926 | 1 | |
| Tomaszewski, Henryk | Henryk Tomaszewski | Director | 1974 | 1 | |
| Tao, Zhi | Zhi Tao | Director | 2006 - 2009 | 5 | |
| Tessler, Jerry | Jerry Tessler | Director | 1972 | 1 | |
| Todisco, Paolo | Paolo Todisco | Director | 1976 | 4 | |
| Toman, Adolf | Adolf Toman | Director | 1972 | 1 | |
| Terramare, Georg | Georg Terramare | Director | 1937 | 1 | |
| Tanimanidi, El. | El. Tanimanidi | Director | 1980 | 1 | |
| Toelle, Tom | Tom Toelle | Director | 1982 - 1986 | 2 | |
| Tittle, Ryan, C. | Ryan C. Tittle | Director | 2010 | 1 | |
| Twiss, Adam | Adam Twiss | Director | 2011 | 1 | |
| Trafic, Carlos | Carlos Trafic | Director | 1990 | 1 | |
| Tostrup, Camilla | Camilla Tostrup | Director | 1984 | 1 | 1 |
| Ther, Alexa | Alexa Ther | Director | 2008 | 1 | |
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