| Teater i Ernsts Hotell | Teater i Ernsts Hotell | Finland, Vaasa | 1886-03-12 | 1886-03-14 | 1886 | 1 | |
| Third Programme 90, 9 | Third Programme 90, 9 | Greece, Athens | -- | -- | | | |
| Théâtre 13 | Théâtre 13 | France, Paris, 30 rue du Chevarelet | 1993-03-02 | 2023-06-17 | 1993–2023 | 4 | |
| Théâtre de Chelles | Théâtre de Chelles | France, Chelles, Place des Martyrs de Châteaubriant | 2012-03-30 | -- | 2012 | 1 | |
| Théâtre Antoine | Théâtre Antoine | France, Paris, 14 Boulevard de Strasbourg | 1898-02-06 | -- | 1898–1913 | 7 | |
| Theater! Theatre! | Theater! Theatre! | United States of America, Portland, 3430 SE Belmont Street | 2007-08-24 | 2007-09-22 | 2007 | 1 | |
| Theatro Ellinikon | Theatro Ellinikon | Greece, Athens | 1906-07-24 | 1906-08-05 | 1906 | 1 | |
| Trianon-Theater | Trianon-Theater | Germany, Berlin, Prinz-Friedrich-Karl-Straße 7 | 1914-12-31 | -- | 1914 | 1 | |
| Teatro delle Passioni | Teatro delle Passioni | Italy, Modena, Viale Carlo Sigonio, 382 | 2001-02-14 | 2001-02-17 | 2001 | 1 | |
| Telemark gymnas | Telemark gymnas | Norway, Bø i Telemark | 1960-10-08 | -- | 1960–1971 | 3 | |
| Teatro Carlo Felice | Teatro Carlo Felice | Italy, Genova, Passo Eugenio Montale, 4, 16121 | 2006-04-23 | 2006-04-30 | 2006 | 1 | |
| Tron Theatre | Tron Theatre | Scotland, Glasgow, 63 Trongate | 2004-06-17 | 2015-10-24 | 2004–2015 | 2 | |
| Théâtre La Condition Des Soies | Théâtre La Condition Des Soies | France, 13 Rue de la Croix | 2023-07-07 | 2023-07-29 | 2023 | 1 | |
| Theatret i Trondheim | Theatret i Trondheim | Norway, Trondheim, Prinsens Gate 20 | 1856-04-02 | 1927-11-10 | 1856–1928 | 50 | |
| The Hague | The Hague | Netherlands, The Hague | -- | -- | | | |
| Théatro ATTIS | Théatro ATTIS (Theatre ATTIS) | Greece, Athens, Leonidou 7 | 2019-03-20 | 2020-03-12 | 2019 | 1 | |
| Theatre Lobby | Theatre Lobby | United States of America, Washington D.C. | 1963-06-04 | 1966-07-16 | 1963–1967 | 3 | |
| Thymele Arts | Thymele Arts | United States of America, Los Angeles, 5481 CA-2 | 2018-06-02 | 2018-06-16 | 2018 | 1 | |
| Theaterforum Gauting | Theaterforum Gauting | Germany, Gauting, Lärchenstraße 3 | 2008-01-12 | -- | 2008 | 1 | |
| Theater der Bergarbeiter | Theater der Bergarbeiter | Germany, Senftenberg, Theaterpassage 1 | 1987-11-06 | -- | 1987 | 1 | |
| Trondhjems Nationale Scene | Trondhjems Nationale Scene | Norway, Trondheim, Prinsens Gate 20 | 1911-09-16 | -- | 1911–1924 | 11 | |
| TAT-Probebühne | TAT-Probebühne | Germany, Frankfurt, Daimlerstraße 32 | 1993-10-07 | 1994-06-05 | 1993–1994 | 2 | |
| Teatr Nowy | Teatr Nowy | Poland, Łódź, ul. Zachodnia 93 | 1963-04-06 | 1971-01-21 | 1963–1983 | 5 | |
| Theater am Rathausplatz | Theater am Rathausplatz | Germany, Paderborn | 1977-02-19 | -- | 1977 | 1 | |
| Trivselshagen | Trivselshagen | Norway, Sandane | 2015-10-04 | 2020-09-18 | 2015–2022 | 4 | |
| Torvehallerne | Torvehallerne | Denmark, Vejle, Kirketorvet 10-16 | 2002-03-13 | -- | 2002–2004 | 2 | |
| Teatr Miejski | Teatr Miejski | Poland, Krakow, Plac Świętego Ducha 1 | 1894-04-27 | 1912-05-06 | 1894–1912 | 26 | |
| Tulgheş | Tulgheş | Romania, Tulgheş | -- | -- | | | |
| Teatro São Pedro | Teatro São Pedro | Brazil, Porto Alegre, Praça Mal. Deodoro - Centro | 1952-08-31 | -- | 1952–2024 | 3 | |
| Teatro Júlia Bergmann | Teatro Júlia Bergmann | Brazil, São Paulo, Rua Cruzeiro, 256 - Barra Funda | 2006-10-07 | 2006-12-10 | 2006 | 1 | |
| The Little Theatre, DePauw University | The Little Theatre, DePauw University | United States of America, Greencastle | 1963-03-28 | -- | 1963 | 1 | |
| Teatro Bergidum de Ponferrada | Teatro Bergidum de Ponferrada | Spain, Ponferrada, Calle Ancha, 15 | 2005-02-19 | 2005-02-19 | 2005 | 1 | |
| Teatro Comunale Bosconero | Teatro Comunale Bosconero | Italy, Bosconero, Via Villafranca 5, 10080 | 2023-03-08 | -- | 2023 | 1 | |
| Teatri Oda | Teatri Oda | Kosovo, Prishtinë, Pallati i Rinisë dhe i Sporteve nr. 111 | 2013-09-23 | 2013-09-23 | 2013 | 1 | |
| Theater Augsburg | Theater Augsburg | Germany, Augsburg, Kasernstraße 4 | 2001-10-06 | 2009-06-12 | 2001–2017 | 4 | |
| Tsjernigivs'kij molodizjnij teatr Vistavi | Tsjernigivs'kij molodizjnij teatr Vistavi | Ukraine, Tsjernihiv | 2004-10-01 | -- | 2004 | 1 | |
| Timișoara | Timișoara | Romania, Timişoara | 1890-11-14 | 1940-12-18 | 1890–1940 | 9 | |
| Teatro dei Filarmonici di Ascoli Piceno | Teatro dei Filarmonici di Ascoli Piceno | Italy, Piceno, Via delle Torri, 39, 63100 Ascoli Piceno AP, Italy | 2024-02-24 | 2024-02-24 | 2024 | 1 | |
| Tanzhaus NRW | Tanzhaus NRW | Germany, Düsseldorf, Erkrather Str. 30 | 2002-09-29 | 2003-01-25 | 2002 | 1 | |
| Teatro Argentina | Teatro Argentina | Italy, Rome, Largo di Torre Argentina, 52 | 1919-08-28 | 2019-04-28 | 1919–2019 | 23 | |
| Thyolo Secondary School | Thyolo Secondary School | Malawi, Thyolo | 2006-07-22 | -- | 2006 | 1 | |
| Teatre Olimp | Teatre Olimp (Teatro Olimpo) | Spain, Barcelona, Carrer Mercaders 3 | 1896-04-16 | 1986-04-16 | 1896–1931 | 2 | |
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