| Theatre Royal | Theatre Royal | Australia, Brisbane, 80 Elizabeth Street | 1891-02-11 | 1891-02-13 | 1891 | 3 | |
| The Plough Theatre | The Plough Theatre | England, Devon, 9-11 Fore St, Great Torrington | 1985-01-15 | -- | 1985 | 1 | |
| Teatro Civico | Teatro Civico | Italy, Vercelli, Via Monte di Pietà, 15 | 2003-04-09 | 2003-04-10 | 2003–2018 | 3 | |
| Taproot Theatre | Taproot Theatre | United States, Seattle, 204 N 85th St | 2005-02-02 | 2005-03-05 | 2005 | 1 | |
| Tingvoll Gymnas | Tingvoll Gymnas | Norway, Tingvold | 1969-09-16 | -- | 1969–1990 | 4 | |
| Teatro Estudio San Sebastián | Teatro Estudio San Sebastián | Spain, San Sebastian, Heriz Pasealekua, 16, | 1966-10-03 | -- | 1966 | 1 | |
| Technical School Auditorium | Technical School Auditorium | Canada, Kingston | 1932-04-21 | -- | 1932 | 1 | |
| Teatro Vascello | Teatro Vascello | Italy, Rome, Via Giacinto Carini, 78, | 1993-11-10 | 1993-12-20 | 1993–2017 | 2 | |
| Theater in der Josefstadt | Theater in der Josefstadt | Austria, Vienna, Josefstädter Straße 26 | 1900-07-14 | 2013-01-30 | 1900–2019 | 21 | |
| Teatergrad | Teatergrad | Denmark, Copenhagen, Nørrebrogade 208 | 2015-08-27 | 2015-11-02 | 2015 | 1 | |
| Theater im Kärntnertor | Ensemble Theater im Kärntnertor | Austria, Wien, Walfischgasse 4 | 1975-03-01 | -- | 1975 | 1 | |
| Teatro Politeama | Teatro Politeama | Italy, Catania | 1893-08-29 | -- | 1893 | 1 | |
| Théâtre de la Cité Internationale | Théâtre de la Cité Internationale | France, Paris, 21a Boulevard Jourdan | 1981-04-23 | 2014-05-11 | 1981–2014 | 3 | |
| Theatro Katerinas Vasilakou | Theatro Katerinas Vasilakou | Greece, Athens, Profitou Daniil 3 | 2003-09-08 | 2003-09-20 | 2003 | 1 | |
| Teaterhuset Forum | Teaterhuset Forum | Norway, Molde, Julsundveien 4 | 2001-03-21 | 2001-04-20 | 2001 | 1 | |
| Theater der Freien Hansestadt | Theater der Freien Hansestadt | Germany, Bremen | 1961-02-02 | -- | 1961–1984 | 3 | |
| Tou Scene | Tou Scene | Norway, Stavanger, Kvitsøygata 25 | 2007-03-09 | 2007-03-11 | 2007 | 1 | |
| Teatersalen | Teatersalen | Norway, Oslo, Keysers gate 1 (Søilen Teater) | 1957-09-29 | -- | 1957 | 1 | |
| Theater de Kom | Theater de Kom | Netherlands, Nieuwegein, Stadsplein 6 | 2017-02-25 | 2017-02-26 | 2017 | 1 | |
| Tranebjerg Teater | Tranebjerg Teater | Denmark, Tranebjerg, Samsø | 1907-11-19 | -- | 1907 | 1 | |
| Trilogy Theatre | Trilogy Theatre | United States, New York, 341 W 44th St | 1998-12-02 | 2000-10-21 | 1998–2000 | 2 | |
| Theatertage Aarau | Theatertage Aarau | Switzerland, Aarau, Metzgergasse 18 | 2002-06-15 | -- | 2002 | 1 | |
| Theatro Polytheama | Theatro Polytheama | Greece, Pireus | 1898-08-16 | 1913-02-14 | 1898–1913 | 3 | |
| Teatro Verdi | Teatro Verdi | Italy, Padova, Via Livello, 32 | 2001-01-09 | 2001-01-14 | 2001 | 1 | |
| Theater Junge Generation | Theater Junge Generation | Germany, Dresden, Meißner Landstraße 4 | 1995-03-10 | -- | 1995–2002 | 3 | |
| Teatro del Centro | Teatro del Centro | Spain, Madrid | 1929-02-11 | -- | 1929 | 1 | |
| Tripoli | Tripoli | Greece, Tripoli | 1911-03-25 | -- | 1911 | 1 | |
| The Sheridan Square Playhouse | The Sheridan Square Playhouse | United States, New York, 99 7th Avenue South | 1961-06-26 | -- | 1961 | 1 | |
| Teatro della Bicchieraia | Teatro della Bicchieraia | Italy, Arezzo, Via Della Bicchieraia 32 | 2001-03-07 | 2001-03-08 | 2001 | 1 | |
| Teatro della Celebrazioni | Teatro della Celebrazioni | Italy, Bologna, Via Saragozza, 234 | 1999-01-21 | 1999-01-24 | 1999 | 1 | |
| Tomelloso | Tomelloso | Spain, Tomelloso | 2010-03-27 | -- | 2010 | 1 | |
| Théâtre Forum Meyrin | Théâtre Forum Meyrin | Switzerland, Meyrin, Place des Cinq-Continents 1 | 2012-12-05 | 2012-12-06 | 2012 | 1 | |
| Teaterlokalet | Teaterlokalet | Norway, Sandefjord, Jernbanealleen 34 | 1956-10-15 | -- | 1956–1969 | 5 | |
| Theatro Foskolos | Theatro Foskolos | Greece, Zakynthos, Dionysios Solomos Square | 1904-04- | -- | 1904–1911 | 3 | |
| Theatre Royal | Theatre Royal | England, Manchester, Smithy Street | 1904-04-25 | 1904-04-30 | 1904–1910 | 4 | |
| Theatro Nea Skini | Theatro Nea Skini | Greece, Thessaloniki | 1918-06-24 | -- | 1918 | 1 | |
| Theatro Altera Pars | Theatro Altera Pars | Greece, Athens, Meg. Alexandrou 123 | 2006-11-16 | 2010-01-10 | 2006–2009 | 2 | |
| Theatre Royal | Theatre Royal | England, Brighton, New Rd | 1889-06-20 | 2013-12-07 | 1889–2013 | 12 | |
| Teaterøen | Teaterøen | Denmark, København, William Wains Gade 11 | 2013-09-25 | 2013-09-26 | 2013 | 1 | |
| Trieste | Trieste | Italy, Trieste | 1895-05-15 | -- | 1895–1952 | 6 | |
| Theater Center Forum | Theater Center Forum | Austria, Vienna, Porzellangasse 50 | 2006-04-21 | -- | 2006 | 1 | |
| Teatro Carlos Alberto | Teatro Carlos Alberto | Portugal, Porto, Rua Oliveiras 43 | 2008-05-09 | 2008-08-25 | 2008 | 1 | |
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