| Theodoricus, - | - Theodoricus | Costume Designer | 2009 | 1 | |
| Theodorakis, Giannis | Giannis Theodorakis | Designer | 2013 | 1 | |
| Theocleous, Benedict | Benedict Theocleous | Actor | 2003 | 7 | |
| Theobald, Heidemarie | Heidemarie Theobald | Actor | 1985 | 1 | |
| Theobald, Edward | Edward Theobald | Director | 1972 | 1 | |
| Theo, John | John Theo | Lighting Designer, Sound Designer | 2018 | 2 | |
| Theng, Hien-Chi | Hien-Chi Theng | Lighting Designer | 2005 - 2006 | 2 | |
| Thenen, Lisa | Lisa Thenen | Actor | 1935 - 1938 | 2 | |
| Themelis, Dimitris | Dimitris Themelis | Composer | 1984 | 1 | |
| Themeli, Nteni | Nteni Themeli | Actor, Translator | 1993 - 2001 | 4 | |
| Thelwall, Milo | Milo Thelwall | Actor | 2005 | 7 | |
| Thell, Ragnar | Ragnar Thell | Actor, Adaptation, Director | 1959 | 6 | |
| Thelin, Paul-Arne | Paul-Arne Thelin | Actor | 2010 | 1 | |
| Thelemann, Susanne | Susanne Thelemann | Dramaturg | 1990 - 2008 | 6 | |
| Thelemann, Andrea | Andrea Thelemann | Actor | 1995 | 9 | |
| Thelander, Lesley | Lesley Thelander | Designer | 1982 | 1 | |
| Thelander, Claes | Claes Thelander | Actor | 1946 - 1976 | 4 | 1 |
| Thejll, Carl | Carl Thejll | Actor | 1916 - 1921 | 3 | 1 |
| Theißen, Nelly | Nelly Theißen | Actor | 1941 - 1946 | 2 | |
| Theisen, Tamara | Tamara Theisen | Actor | 2018 | 1 | |
| Theisen, Kathleen | Kathleen Theisen | Actor | 2005 | 1 | |
| Theis, Mickey | Mickey Theis | | | | |
| Thein, Christoph | Christoph Thein | Dramaturg | 2011 | 13 | |
| Theimer, Wilhelm | Wilhelm Theimer | Actor | 1924 | 1 | |
| Theimer, Trudy | Trudy Theimer | Actor | 1935 | 1 | |
| Theimer, Ivo | Ivo Theimer | Actor | 1995 - 2007 | 14 | |
| Theill, Lydia | Lydia Theill | Actor | 1868 - 1870 | 2 | |
| Theile, Vera | Vera Theile | Dancer | 1961 | 1 | |
| Theile, Marie | Marie Theile | Actor | 1895 | 1 | |
| Theil, Andrew | Andrew Theil | Designer | 2008 | 1 | |
| Theiakos, Giannis | Giannis Theiakos | Actor | 1989 | 1 | |
| Thegerström, Ferdinand | Ferdinand Thegerström | Actor | 1874 - 1894 | 19 | 1 |
| Thegerström, Carl | Carl Thegerström | Actor | 1887 | 1 | |
| Theedom, Peter | Peter Theedom | Actor | 1986 | 2 | |
| Thebian, Asaad | Asaad Thebian | Actor | 2022 | 1 | |
| Thébert, Claude | Claude Thébert | Actor | 1993 | 13 | |
| Thebaud, Estelle | Estelle Thebaud | Actor | 1914 | 1 | |
| Theater, Dream | Dream Theater | Composer | 2002 | 1 | |
| the Falco, Rubem | Rubem the Falco | Actor | 1971 | 1 | |
| The dog, Yeti | Yeti The dog | Actor | 1980 | 1 | |
| Thazard, Chris | Chris Thazard | Actor | 2019 | 1 | |
| Thayer, Janet | Janet Thayer | Actor | 1995 | 1 | |
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