| Theater im Zimmer | Theater im Zimmer | Germany, Hamburg, Alsterchaussee 30, | 1990-10-12 | -- | 1990 | 1 | |
| Teatro degli Animosi | Teatro degli Animosi | Italy, Carrara MS, Piazza Cesare Battisti | 2000-01-15 | -- | 2000 | 1 | |
| Theatret i Tønder | Theatret i Tønder | Denmark, Tønder | 1883-10-24 | -- | 1883 | 1 | |
| Teatro di Pesaro La Piccola Ribalta | Teatro di Pesaro La Piccola Ribalta | Italy, Pesaro, Via Acquedotto, 15 | 2025-05-10 | 2025-05-11 | 2025 | 1 | |
| Teatro Oscar Fessler | Teatro Oscar Fessler | Costa Rica, Barrio Escalante, San José | 2010-09-17 | 2010-10-24 | 2010 | 1 | |
| Teatro Civico | Teatro Civico | Italy, Sassari, Corso Vittorio Emanuele II, 07100 Sassari SS, Italy | 2020-01-20 | -- | 2020 | 1 | |
| Teatro India | Teatro India | Italy, Rome, Lungotevere Vittorio Gassman, 1 | 2008-04-02 | 2008-04-06 | 2008 | 1 | |
| Theatret i Hotel Phønix | Theatret i Hotel Phønix | Norway, Skien | 1883-11-21 | 1884-06-11 | 1883 | 1 | |
| Trinity Valley School | Trinity Valley School | United States of America, Willow Creek, 730 CA-96 | 2005-12-08 | -- | 2005 | 1 | |
| Telfair Peet Theatre | Telfair Peet Theatre | United States of America, Auburn, 350 W Samford Ave | 2021-09-30 | 2021-10-06 | 2021 | 1 | |
| Teatro della Regina | Teatro della Regina | Italy, Cattolica, Piazzale della Repubblica 1 | 2001-03-06 | 2001-03-06 | 2001 | 1 | |
| Teatersalen | Teatersalen | Norway, Rommetveit | 1969-09-25 | -- | 1969 | 1 | |
| Theater | Theater | Germany, Marsberg | 1980-01-30 | -- | 1980 | 1 | |
| Teatro Serra | Teatro Serra | Italy, Napoli, Via Diocleziano, 316, 80125 | 2023-03-24 | 2023-03-26 | 2023 | 1 | |
| Teatro Juvarra | Teatro Juvarra | Italy, Torino, Via Juvarra 13, 10128 | 1975-02-23 | 1975-02-25 | 1975 | 1 | |
| The Plough Theatre | The Plough Theatre | England, Devon, 9-11 Fore St, Great Torrington | 1985-01-15 | -- | 1985 | 1 | |
| Théâtre National du Palais de Chaillot | Théâtre National du Palais de Chaillot | France, Paris, 1 Place du Trocadéro et du 11 Novembre | 1958-02-05 | -- | 1958 | 1 | |
| Teatre Lliure YouTube channel | Teatre Lliure YouTube channel | Spain | 2020-04-23 | 2020-04-26 | 2020 | 1 | |
| The Lights | The Lights | England, Andover, 3 West St | 2011-05-04 | -- | 2011 | 1 | |
| The Novelty Theatre | The Novelty Theatre | United States of America, San Francisco | 1908-05-23 | 1908-05-23 | 1908 | 1 | |
| Teatret i Nibe | Teatret i Nibe | Denmark, Nibe | 1907-11-05 | -- | 1907 | 1 | |
| The Artillery Lane Players | The Artillery Lane Players | United States of America, St. Augustine | 1948-02-20 | -- | 1948 | 1 | |
| Transteatral | Transteatral | Czech Republic, Prague, V Jámě 1598/4 | 2010-06-06 | -- | 2010 | 1 | |
| Teatro Balbo | Teatro Balbo | Italy, Torino | 1921-05-05 | -- | 1921 | 1 | |
| Teatro Angelicum | Teatro Angelicum | Italy, Milan | 1954-02-26 | 1954-02-27 | 1954 | 1 | |
| Teatro Principe di Napoli | Teatro Principe di Napoli | Italy, Catania | 1907-10-14 | -- | 1907 | 1 | |
| Theater der Stadt Marl | Theater der Stadt Marl | Germany, Marl, Am Theater 1 | 1962-05- | -- | 1962 | 1 | |
| Theatro Odou Antioxeias | Theatro Odou Antioxeias (Antiochia Street Teater) | Greece, Athens | 2006-05-04 | 2006-05-28 | 2006 | 1 | |
| Theater am Werk am Petersplatz | Theater am Werk am Petersplatz | Austria, Vienna | 2024-11-03 | 2024-11-08 | 2024 | 1 | |
| The Auditorium | The Auditorium | United States of America, The High Point | 1913-12-30 | 1913-12-30 | 1913 | 1 | |
| Teatro Ermano Fabbri | Teatro Ermano Fabbri | Italy, Vignola, Via Pietro Minghelli, 11, 41058 | 2013-11-20 | -- | 2013 | 1 | |
| Teatro Price | Teatro Price | Spain, Madrid, Plaza del Rey | 1920-10-09 | -- | 1920 | 1 | |
| Teatr Klasyczny | Teatr Klasyczny | Poland, Warsaw | 1971-04-24 | -- | 1971 | 1 | |
| Théâtre de Chartres | Théâtre de Chartres | France, Chartres, Place de Ravenne | 2005-02-24 | 2005-02-25 | 2005 | 1 | |
| Teatr Weimar | Teatr Weimar | Sweden, Malmö, S:t Gertrudsgatan 4B | 2010-02-12 | 2010-03-07 | 2010 | 1 | |
| Teatro Barcelona | Teatro Barcelona | Spain, Barcelona, Rambla de Cataluña / Paseo de Gracia (today Plaza de Catalunya) | 1943-11-26 | -- | 1943 | 1 | |
| Trippel X | Trippel X | Netherlands, Amsterdam | 1994-07-28 | 1994-07-30 | 1994 | 1 | |
| Temple Theatre | Temple Theatre | United States of America, Owensboro | 1905-01-03 | 1905-01-03 | 1905 | 1 | |
| Tomaszów | Tomaszów | Poland, Tomaszów | 1908-10- | -- | 1908 | 1 | |
| Teatro Toniolo | Teatro Toniolo | Italy, Venezia VE, Piazzetta Cesare Battisti 1 | 2012-12-07 | 2012-12-09 | 2012 | 1 | |
| Théâtre de Genève | Théâtre de Genève | Switzerland, Genève | 1906-09-21 | -- | 1906 | 1 | |
| Terrazza dei Signori | Terrazza dei Signori | Italy, Santarcangelo di Romagna, Contrada dei Signori, 41 | 1974-07-21 | -- | 1974 | 1 | |
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