| Thirteen/WNET New York (USA) | Thirteen/WNET New York (USA) | United States of America, New York | -- | -- | | | |
| Theater im Sechseckbau | Theater im Sechseckbau | Germany, Kiel, Westring 385 | -- | -- | | | |
| Tulcea | Tulcea | Romania, Tulcea | -- | -- | | | |
| Théâtre des Nations | Théâtre des Nations | France, Paris, 2 Place du Châtelet | -- | -- | | | |
| Târgovişte | Târgovişte | Romania, Târgovişte | -- | -- | | | |
| Tolga | Tolga | Norway, Tolga | -- | -- | | | |
| Town and Gown Hall | Town and Gown Hall | United States of America, Berkeley | -- | -- | | | |
| Theatrikos Organismos "Morfes" | Theatrikos Organismos "Morfes" | Greece, Athens | -- | -- | | | |
| Teatre Casino la Unió de Vidreres | Teatre Casino la Unió de Vidreres | Spain, Vidreres, Carrer Pau Casals, 10, 17411 | -- | -- | | | |
| Thionville, Théâtre de | Théâtre de Thionville | France, Thionville, 30 Boulevard Foch | -- | -- | | | |
| Tallin | Tallin | Estonia | -- | -- | | | |
| Theater Malpertuis | Theater Malpertuis | Belgium, Knokke-Heist | -- | -- | | | |
| Theater Studio | Theater Studio | Russia | -- | -- | | | |
| Teatro Studio Mejerchol’d | Teatro Studio Mejerchol’d | Italy, Bari | -- | -- | | | |
| Tel Aviv | Tel Aviv | Israel, Tel Aviv | -- | -- | | | |
| TIMBRe4 Madrid | TIMBRe4 Madrid | Spain, Madrid, Calle de Arganzuela, 6 | -- | -- | | | |
| Târgu Ocna | Târgu Ocna | Romania, Târgu Ocna | -- | -- | | | |
| Tulgheş | Tulgheş | Romania, Tulgheş | -- | -- | | | |
| Teatro Juvarra | Teatro Juvarra | Italy, Torino, Via Juvarra 13, 10128 | 1975-02-23 | 1975-02-25 | 1975 | 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 | |
| Tavisupali Teatri | Tavisupali Teatri (Liberty Theatre) | Georgia, Tbilisi, 2 Rustaveli Ave | 2011-12-25 | -- | 2011 | 1 | |
| Trnava | Trnava | Slovak Republic, Trnava | 1912-09-24 | -- | 1912 | 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 Angelicum | Teatro Angelicum | Italy, Milan | 1954-02-26 | 1954-02-27 | 1954 | 1 | |
| Theatro Ena | Theatro Ena | Cyprus, Nicosia, 4 Athinas Avenue | 2003-04-11 | -- | 2003 | 1 | |
| Theater der Stadt Marl | Theater der Stadt Marl | Germany, Marl, Am Theater 1 | 1962-05- | -- | 1962 | 1 | |
| Theatre 711 | Theatre 711 | Japan, Tokyo | 2025-03-25 | 2025-03-30 | 2025 | 1 | |
| Tapolca | Tapolca | Hungary, Tapolca | 1925-02-07 | -- | 1925 | 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 | |
| Teatro Goldoni | Teatro Goldoni | Italy, Livorno, Via Goldoni, 51 | 1982-11-13 | -- | 1982 | 1 | |
| Théâtre de Chartres | Théâtre de Chartres | France, Chartres, Place de Ravenne | 2005-02-24 | 2005-02-25 | 2005 | 1 | |
| Teatro Barcelona | Teatro Barcelona | Spain, Barcelona, Rambla de Cataluña / Paseo de Gracia (today Plaza de Catalunya) | 1943-11-26 | -- | 1943 | 1 | |
| The Street Theatre | The Street Theatre | Australia, Canberra, 15 Childers Street | 2004-08-04 | 2004-08-07 | 2004 | 1 | |
| Teatro Bernal de El Palmar | Teatro Bernal de El Palmar | Spain, Murcia, Calle Lorca, 65 | 2010-03-20 | -- | 2010 | 1 | |
| Temple Theatre | Temple Theatre | United States of America, Owensboro | 1905-01-03 | 1905-01-03 | 1905 | 1 | |
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