| Teatros del Canal | Teatros del Canal | Spain, Madrid, Calle de Cea Bermúdez, 1 | 2013-11-26 | 2024-02-07 | 2013–2024 | 3 | |
| Trinity Square Repertory Company | Trinity Square Repertory Company | United States of America, Providence, 201 Washington Street | 1968-03-21 | 1984-01-01 | 1968–1983 | 3 | |
| Theatro Nea Skini | Theatro Nea Skini (New Stage) | Greece, Athens, Agiou Konstantinou 22 | 1903-06-12 | 1907-10-03 | 1903–1907 | 3 | |
| Theater Augsburg (Komödie) | Theater Augsburg (Komödie) | Germany, Augsburg, Kennedy-Platz 1 | 1962-12-06 | -- | 1962–2003 | 3 | |
| Teatre Lliure (Gràcia) | Teatre Lliure (Gràcia) | Spain, Barcelona | 1978-02-23 | 2023-01-29 | 1978–2022 | 3 | |
| The Kentucky | The Kentucky | United States of America, Paducah | 1903-11-06 | 1907-09-16 | 1903–1907 | 3 | |
| Teatre de les Arts | Teatre de les Arts (Teatro de las Artes) | Spain, Barcelona, Carrer de Floridablanca, 135-139 | 1902-09-05 | -- | 1902–1903 | 3 | |
| Teatro Trastevere | Teatro Trastevere | Italy, Rome, Via Jacopa de' Settesoli, 3 | 1982-03-24 | 2022-03-27 | 1982–2022 | 3 | |
| Teatro Nacional Lope de Vega | Teatro Nacional Lope de Vega | Spain, Seville | 1982-01-13 | 2011-02-20 | 1982–2011 | 3 | |
| Tampereen Työväen Teatteri | Tampereen Työväen Teatteri | Finland, Tampere, Hämeenpuisto 28 | 1925-- | 2012-05-10 | 1925–2012 | 3 | |
| The Torch Theatre | The Torch Theatre | England, London, 37 Wilton Place | 1938-11-18 | 1945-09-09 | 1938–1947 | 3 | |
| Teatro Municipal de Almada | Teatro Municipal de Almada | Portugal, Almada, Av. Prof. Egas Moniz | 1998-07-18 | 2008-07-13 | 1998–2008 | 3 | |
| Theater der Altmark Stendal | Theater der Altmark Stendal | Germany, Stendal, Karlstraße 6 | 1993-12-11 | 2011-04-09 | 1993–2010 | 3 | |
| Theater an der Effingerstrasse, Das | Das Theater an der Effingerstrasse | Switzerland, Bern, Effingerstrasse 14 | 2005-11-01 | 2015-05-29 | 2005–2015 | 3 | |
| Teatersalen | Teatersalen | Norway, Bø i Telemark | 1963-01-26 | -- | 1963–1969 | 3 | |
| Teatro Politecnico | Teatro Politecnico | Italy, Rome, Via Giovanni Battista Tiepolo | 1988-04-14 | 2002-05-19 | 1988–2002 | 3 | |
| Teatro di Varese | Teatro di Varese | Italy, Varese, Piazza della Repubblica, 21100 | 2012-03-17 | -- | 2012–2019 | 3 | |
| Theater Tri-bühne | Theater Tri-bühne | Germany, Stuttgart, Eberhardstraße 61A | 2005-02-18 | 2007-04-14 | 2005–2006 | 3 | |
| Teatrul de Stat Constanţa | Teatrul de Stat Constanţa | Romania, Constanţa, Bulevardul Ferdinand, no.11 | 1966-12-29 | -- | 1966–1968 | 3 | |
| Teatro Sérgio Cardoso | Teatro Sérgio Cardoso | Brazil, Bela Vista, Rua Rui Barbosa, 153 | 1990-08-10 | 2024-04-28 | 1990–2024 | 3 | |
| Turnhallen | Turnhallen | Norway, Mandal | 1952-01-27 | -- | 1952–1960 | 3 | |
| Teater Vanemuine | Teater Vanemuine | Estonia, Tartu, Vanemuise 6 | 1996-09-22 | 2004-04-23 | 1996–2006 | 3 | |
| Theatre Royal | Theatre Royal | Australia, Brisbane, 80 Elizabeth Street | 1891-02-11 | 1891-02-13 | 1891 | 3 | |
| Teatro Fernán Gómez - Centro de Arte | Teatro Fernán Gómez - Centro de Arte | Spain, Madrid, Calle de Colón, 4 | 2011-04-07 | 2017-12-17 | 2011–2017 | 3 | |
| Teatr Powszechny | Teatr Powszechny | Poland, Łódź, Legionów 21 | 1960-05-07 | 2016-04-23 | 1960–2016 | 3 | |
| Teatro Bellas Artes | Teatro Bellas Artes | Spain, Madrid, Calle del Marques de Casa Riera, 2 | 1983-02-02 | 2010-01-24 | 1983–2010 | 3 | |
| T.B. Sheldon Performing Arts Theatre | T.B. Sheldon Performing Arts Theatre | United States of America, Red Wing, 443 West 3rd Street | 2009-04-04 | -- | 2009–2013 | 3 | |
| Theater & Congres Orpheus | Theater & Congres Orpheus | Netherlands, Apeldoorn, Churchillplein 1 | 1992-02-19 | -- | 1992–2008 | 3 | |
| Teatre Rialto Valencia | Teatre Rialto Valencia | Spain, Valencia, Plaça de l'Ajuntament, 17 | 2003-02-26 | 2013-12-14 | 2003–2013 | 3 | |
| Theatre Lobby | Theatre Lobby | United States of America, Washington D.C. | 1963-06-04 | 1966-07-16 | 1963–1967 | 3 | |
| Theater Lüneburg | Theater Lüneburg | Germany, Lüneburg, An den Reeperbahnen 3 | 2001-09-28 | 2008-03-20 | 2001–2008 | 3 | |
| Teatro Nazionale | Teatro Nazionale | Italy, Rome, Via del Viminale, 51 | 1899-01-10 | -- | 1899–1914 | 3 | |
| Tĕšínské divadlo Scena polska | Tĕšínské divadlo Scena polska | Czech Republic, Český Těšín, Ostravská 67 | 1988-05-21 | -- | 1988–2016 | 3 | |
| Torch Theatre | Torch Theatre | Wales, Milford Haven, Pembrokeshire, St Peter's Rd | 1991-03-26 | 1993-11-13 | 1991–2011 | 3 | |
| Theater aan de Schie | Theater aan de Schie | Netherlands, Schiedam, Stadserf 1 | 2001-12-18 | -- | 2001–2017 | 3 | |
| Theater am Stadtpark | Theater am Stadtpark | Austria, Graz, Stadtpark 1 | 1892-04-23 | 1895-05-24 | 1892–1897 | 3 | |
| Teatr Wielki | Teatr Wielki | Poland, Lublin | 1918-01-15 | 1918-02-05 | 1918–1920 | 3 | |
| Tamási Áron Színház | Tamási Áron Színház | Romania, Sfântu Gheorghe, Strada Libertății 1 | 1972-05-05 | 1999-12-12 | 1972–1999 | 3 | |
| Teatro Donizetti | Teatro Donizetti | Italy, Bergamo, Piazza Cavour, 15 | 1974-02-16 | -- | 1974–1994 | 3 | |
| Theatro Circo | Theatro Circo | Portugal, Braga, Rua Gonçalo Sampaio | 2008-01-11 | 2023-05-04 | 2008–2023 | 3 | |
| Theatro Avlaia | Theatro Avlaia | Greece, Thessaloniki | 1968-03-05 | 2002-02-10 | 1968–2002 | 3 | |
| Teatro de la Princesa | Teatro de la Princesa | Spain, Madrid, Calle de Tamayo y Baus, 4 | 1906-10-20 | -- | 1906–1919 | 3 | |
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