| Tampere Internasjonale Teaterfestival | Tampere Internasjonale Teaterfestival | 1993 | 1 | |
| Tom Løberg | Tom Løberg | 2010 | 1 | |
| Tivoli Teater | Tivoli Teater | 1901 | 1 | |
| Theatre Couture | Theatre Couture | 2000 | 1 | |
| Tovariscestvo | Tovariscestvo | 1917 | 1 | |
| Teatr Miejski | Teatr Miejski | 1911 | 1 | |
| Teatr Letni w Ogrodzie Bernardyńskim | Teatr Letni w Ogrodzie Bernardyńskim | 1907 | 1 | |
| Trupa operetkowa Juliana Grabińskiego | Trupa operetkowa Juliana Grabińskiego | 1884 | 1 | |
| Théâtre du Vieux-Colombier | Théâtre du Vieux-Colombier | 1918 | 1 | |
| Teaterfestivalen i Ålesund | Teaterfestivalen i Ålesund | 2006 | 1 | |
| Truppa dramatičeskich artistov pod upravleniem A. Tol´skogo | Truppa dramatičeskich artistov pod upravleniem A. Tol´skogo | 1914 | 1 | |
| Trupa Eugeniusza Majdrowicza | Trupa Eugeniusza Majdrowicza | 1904 | 1 | |
| Tysnesfest 09 | Tysnesfest 09 | 2009 | 1 | |
| Teaterfestivalen på Stiklestad | Teaterfestivalen på Stiklestad | 2010 | 1 | |
| Teatr i Sąd | Teatr i Sąd | 1914 | 1 | |
| Teatro San Martín | Teatro San Martín | 2001 | 1 | |
| Torosha | Torosha | 1918 | 1 | |
| Teatr Łódzki | Teatr Łódzki | 1906 | 1 | |
| Teatrón | Teatrón | 1989 | 1 | |
| Temporada Alta | Temporada Alta | 2006 | 1 | |
| Teatr Mały z Warsawy pod kier | Teatr Mały z Warsawy pod kier | 1913 | 1 | |
| Theatre Four | Theatre Four | 1963 | 1 | |
| Theater E | Theater E | 1994 | 1 | |
| Trond Reinholdtsen | Trond Reinholdtsen | 2011 | 1 | |
| Tokyo International Players | Tokyo International Players | 2004 | 1 | |
| Trupa Józefa Teksla i Feliksa Wesosowskiego | Trupa Józefa Teksla i Feliksa Wesosowskiego | 1883 | 1 | |
| Tooneelvereeniging, De | De Tooneelvereeniging | 1889 | 1 | |
| Thiasos Christina Kalogerikou | Thiasos Christina Kalogerikou | 1914 | 1 | |
| Tin Alley Players | Tin Alley Players | 1945 | 1 | |
| Tokyo Stage Society | Tokyo Stage Society | 1912 | 1 | |
| Thiasos Dimosthenis Alexiadis | Thiasos Dimosthenis Alexiadis | 1901 | 1 | |
| Transvaalse Raad vir die Uitvoerende Kunste | Transvaalse Raad vir die Uitvoerende Kunste | 1985 | 1 | |
| TITAN Teaterskole | TITAN Teaterskole | 2009 | 1 | |
| Thiasos Thomas Oikonomou-Loukia Tiveri | Thiasos Thomas Oikonomou-Loukia Tiveri | 1909 | 1 | |
| Tampere Theatre Festival | Tampere Theatre Festival | 2009 | 1 | |
| Teatar «Salsa i smjah» | Teatar «Salsa i smjah» | 1924 | 1 | |
| Tofusha | Tofusha | 1994 | 1 | |
| Thiasos Nikos Moraïtis | Thiasos Nikos Moraïtis | 1918 | 1 | |
| Theatre of Ireland | Theatre of Ireland | 1906 | 1 | |
| TITAN Teatergruppe | TITAN Teatergruppe | 2008 | 1 | |
| Teatre Bis | Teatre Bis | 1997 | 1 | |
| Thiaso Xenofon Isaïas | Thiaso Xenofon Isaïas | 1903 | 1 | |
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